diff --git a/mysql-test/include/index_merge2.inc b/mysql-test/include/index_merge2.inc
index 8cf9c1538ade..b413f70dd8d4 100644
--- a/mysql-test/include/index_merge2.inc
+++ b/mysql-test/include/index_merge2.inc
@@ -148,22 +148,28 @@ analyze table t2;
 -- enable_result_log
 -- enable_query_log
 
+if (!$skip_ror_EXPLAIN_for_MyRocks)
+{
 if ($index_merge_random_rows_in_EXPLAIN)
 {
   --replace_column 10 #
 }
 explain select count(*) from t1 where
   key1a = 2 and key1b is null and  key2a = 2 and key2b is null;
+}
 
 select count(*) from t1 where
   key1a = 2 and key1b is null and key2a = 2 and key2b is null;
 
+if (!$skip_ror_EXPLAIN_for_MyRocks)
+{
 if ($index_merge_random_rows_in_EXPLAIN)
 {
   --replace_column 10 #
 }
 explain select count(*) from t1 where
   key1a = 2 and key1b is null and key3a = 2 and key3b is null;
+}
 
 select count(*) from t1 where
   key1a = 2 and key1b is null and key3a = 2 and key3b is null;
@@ -378,12 +384,15 @@ analyze table t1;
 -- enable_result_log
 -- enable_query_log
 
+if (!$skip_ror_EXPLAIN_for_MyRocks)
+{
 if ($index_merge_random_rows_in_EXPLAIN)
 {
   --replace_column 10 #
 }
 # to test the bug, the following must use "sort_union":
 explain select * from t1 where (key3 > 30 and key3<35) or (key2 >32 and key2 < 40);
+}
 select * from t1 where (key3 > 30 and key3<35) or (key2 >32 and key2 < 40);
 drop table t1;
 
diff --git a/mysql-test/include/index_merge_2sweeps.inc b/mysql-test/include/index_merge_2sweeps.inc
index add2d86109e1..7d32e159ca1d 100644
--- a/mysql-test/include/index_merge_2sweeps.inc
+++ b/mysql-test/include/index_merge_2sweeps.inc
@@ -51,7 +51,6 @@ select * from t1 where
   (pk < 5) or (pk > 10 and pk < 15) or (pk >= 50 and pk < 55 ) or (pk > @maxv-10)
   or key1=18 or key1=60;
 
---sorted_result
 select * from t1 where
   (pk < 5) or (pk > 10 and pk < 15) or (pk >= 50 and pk < 55 ) or (pk > @maxv-10)
   or key1 < 3 or key1 > @maxv-11;
diff --git a/mysql-test/include/index_merge_ror.inc b/mysql-test/include/index_merge_ror.inc
index 67d574eea422..2bede2138018 100644
--- a/mysql-test/include/index_merge_ror.inc
+++ b/mysql-test/include/index_merge_ror.inc
@@ -128,11 +128,16 @@ analyze table t1;
 --echo # One row results tests for cases where a single row matches all conditions
 explain select key1,key2 from t1 where key1=100 and key2=100;
 select key1,key2 from t1 where key1=100 and key2=100;
-explain select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
-# Mask cost values since it varies between runs how much of the indexes
-# are cached in InnoDB's buffer pool
---replace_regex /(_cost": )"[0-9.]+"/\1"#"/
-explain format=json select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
+
+if (!$skip_ror_EXPLAIN_for_MyRocks)
+{
+  explain select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
+  # Mask cost values since it varies between runs how much of the indexes
+  # are cached in InnoDB's buffer pool
+  --replace_regex /(_cost": )"[0-9.]+"/\1"#"/
+  explain format=json select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
+}
+
 select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
 
 --echo # Several-rows results
@@ -146,26 +151,44 @@ analyze table t1;
 -- enable_query_log
 
 --echo #  ROR-intersection, not covering
-explain select key1,key2,filler1 from t1 where key1=100 and key2=100;
+if (!$skip_ror_EXPLAIN_for_MyRocks)
+{
+  explain select key1,key2,filler1 from t1 where key1=100 and key2=100;
+}
 select key1,key2,filler1 from t1 where key1=100 and key2=100;
 
 --echo #  ROR-intersection, covering
-explain select key1,key2 from t1 where key1=100 and key2=100;
+if (!$skip_ror_EXPLAIN_for_MyRocks)
+{
+  explain select key1,key2 from t1 where key1=100 and key2=100;
+}
 select key1,key2 from t1 where key1=100 and key2=100;
 
 --echo #  ROR-union of ROR-intersections
+if (!$skip_ror_EXPLAIN_for_MyRocks)
+{
 explain select key1,key2,key3,key4 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
+}
 select key1,key2,key3,key4 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
-explain select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
+if (!$skip_ror_EXPLAIN_for_MyRocks)
+{
+  explain select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
+}
 select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
 
 --echo #  3-way ROR-intersection
-explain select key1,key2,key3 from t1 where key1=100 and key2=100 and key3=100;
+if (!$skip_ror_EXPLAIN_for_MyRocks)
+{
+  explain select key1,key2,key3 from t1 where key1=100 and key2=100 and key3=100;
+}
 select key1,key2,key3 from t1 where key1=100 and key2=100 and key3=100;
 
 --echo #  ROR-union(ROR-intersection, ROR-range)
 insert into t1 (key1,key2,key3,key4,filler1) values (101,101,101,101, 'key1234-101');
-explain select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=101;
+if (!$skip_ror_EXPLAIN_for_MyRocks)
+{
+  explain select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=101;
+}
 select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=101;
 
 --echo # Run some ROR updates/deletes
@@ -182,7 +205,10 @@ select key1,key2,filler1 from t1 where key2=100 and key2=200;
 
 --echo # ROR-union(ROR-intersection) with one of ROR-intersection giving empty
 --echo # results
-explain select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
+if (!$skip_ror_EXPLAIN_for_MyRocks)
+{
+  explain select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
+}
 select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
 
 delete from t1 where key3=100 and key4=100;
@@ -196,12 +222,18 @@ analyze table t1;
 --echo # ROR-union with all ROR-intersections giving empty results
 # The relative order of keys inside 
 # "Using union(intersect(keyx,keyx),...)" doesn't matter
---replace_result key2,key1 key1,key2 key4,key3 key3,key4
-explain select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
-select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
+if (!$skip_ror_EXPLAIN_for_MyRocks)
+{
+  --replace_result key2,key1 key1,key2 key4,key3 key3,key4
+  explain select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
+  select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
+}
 
 --echo # ROR-intersection with empty result
-explain select key1,key2 from t1 where key1=100 and key2=100;
+if (!$skip_ror_EXPLAIN_for_MyRocks)
+{
+  explain select key1,key2 from t1 where key1=100 and key2=100;
+}
 select key1,key2 from t1 where key1=100 and key2=100;
 
 --echo # ROR-union tests with various cases.
@@ -216,7 +248,10 @@ analyze table t1;
 -- enable_result_log
 -- enable_query_log
 
-explain select key1,key2,key3,key4,filler1 from t1 where key3=200 or (key1=100 and key2=100) or key4=200;
+if (!$skip_ror_EXPLAIN_for_MyRocks)
+{
+  explain select key1,key2,key3,key4,filler1 from t1 where key3=200 or (key1=100 and key2=100) or key4=200;
+}
 select key1,key2,key3,key4,filler1 from t1 where key3=200 or (key1=100 and key2=100) or key4=200;
 
 insert into t1 (key1, key2, key3, key4, filler1) values (-1, -1, -1, 200,'key4');
@@ -227,7 +262,10 @@ analyze table t1;
 -- enable_result_log
 -- enable_query_log
 
-explain select key1,key2,key3,key4,filler1 from t1 where key3=200 or (key1=100 and key2=100) or key4=200;
+if (!$skip_ror_EXPLAIN_for_MyRocks)
+{
+  explain select key1,key2,key3,key4,filler1 from t1 where key3=200 or (key1=100 and key2=100) or key4=200;
+}
 select key1,key2,key3,key4,filler1 from t1 where key3=200 or (key1=100 and key2=100) or key4=200;
 
 insert into t1 (key1, key2, key3, key4, filler1) values (-1, -1, 200, -1,'key3');
@@ -238,7 +276,10 @@ analyze table t1;
 -- enable_result_log
 -- enable_query_log
 
-explain select key1,key2,key3,key4,filler1 from t1 where key3=200 or (key1=100 and key2=100) or key4=200;
+if (!$skip_ror_EXPLAIN_for_MyRocks)
+{
+  explain select key1,key2,key3,key4,filler1 from t1 where key3=200 or (key1=100 and key2=100) or key4=200;
+}
 select key1,key2,key3,key4,filler1 from t1 where key3=200 or (key1=100 and key2=100) or key4=200;
 
 --echo ##
@@ -257,11 +298,20 @@ if (!$index_merge_random_rows_in_EXPLAIN)
 --echo # Do many tests
 --echo # Check that keys that don't improve selectivity are skipped.
 #
-
+if (!$skip_ror_EXPLAIN_for_MyRocks)
+{
 # Different value on 32 and 64 bit
+if ($random_rows_in_EXPLAIN)
+{
+  --replace_column 9 #
+}
 --replace_result sta_swt12a sta_swt21a sta_swt12a, sta_swt12a,
 explain select * from t1 where st_a=1 and swt1a=1 and swt2a=1;
 
+if ($random_rows_in_EXPLAIN)
+{
+  --replace_column 9 #
+}
 explain select * from t1 where st_b=1 and swt1b=1 and swt2b=1;
 
 if ($index_merge_random_rows_in_EXPLAIN)
@@ -318,6 +368,7 @@ if ($index_merge_random_rows_in_EXPLAIN)
 }
 explain select st_a from t1
   where st_a=1 and swt1a=1 and st_b=1 and swt1b=1 and swt1b=1;
+}
 
 drop table t0,t1;
 
diff --git a/mysql-test/suite/rocksdb/r/index_merge_rocksdb.result b/mysql-test/suite/rocksdb/r/index_merge_rocksdb.result
index 72f2255664f5..22c8592ff282 100644
--- a/mysql-test/suite/rocksdb/r/index_merge_rocksdb.result
+++ b/mysql-test/suite/rocksdb/r/index_merge_rocksdb.result
@@ -23,3 +23,26 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t1	index_merge	key1,key2	key1,key2	5,5	NULL	#	Using intersect(key1,key2); Using where
 UPDATE t1 SET filler1='to be deleted' WHERE key1=100 and key2=100;
 DROP TABLE t0, t1;
+create table t1 (key1 int, key2 int, key3 int, key (key1), key (key2), key(key3)) engine=rocksdb;
+insert into t1 values (1, 100, 100), (1, 200, 200), (1, 300, 300);
+analyze table t1;
+Table	Op	Msg_type	Msg_text
+test.t1	analyze	status	OK
+set global rocksdb_force_flush_memtable_now=1;
+explain select * from t1 where key1 = 1;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	ref	key1	key1	5	const	#	NULL
+explain select key1,key2 from t1 where key1 = 1 or key2 = 1;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	index_merge	key1,key2	key1,key2	5,5	NULL	#	Using union(key1,key2); Using where
+select * from t1 where key1 = 1;
+key1	key2	key3
+1	100	100
+1	200	200
+1	300	300
+select key1,key2 from t1 where key1 = 1 or key2 = 1;
+key1	key2
+1	100
+1	200
+1	300
+drop table t1;
diff --git a/mysql-test/suite/rocksdb/r/index_merge_rocksdb2.result b/mysql-test/suite/rocksdb/r/index_merge_rocksdb2.result
new file mode 100644
index 000000000000..eab9bbc2ea76
--- /dev/null
+++ b/mysql-test/suite/rocksdb/r/index_merge_rocksdb2.result
@@ -0,0 +1,1419 @@
+set global rocksdb_force_flush_memtable_now=1;
+#---------------- Index merge test 1 -------------------------------------------
+SET SESSION DEFAULT_STORAGE_ENGINE = RocksDB;
+drop table if exists t0, t1, t2, t3, t4;
+create table t0
+(
+key1 int not null,
+key2 int not null,
+key3 int not null,
+key4 int not null,
+key5 int not null,
+key6 int not null,
+key7 int not null,
+key8 int not null,
+INDEX i1(key1),
+INDEX i2(key2),
+INDEX i3(key3),
+INDEX i4(key4),
+INDEX i5(key5),
+INDEX i6(key6),
+INDEX i7(key7),
+INDEX i8(key8)
+);
+analyze table t0;
+Table	Op	Msg_type	Msg_text
+test.t0	analyze	status	OK
+explain select * from t0 where key1 < 3 or key1 > 1020;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t0	range	i1	i1	4	NULL	2	Using index condition
+explain
+select * from t0 where key1 < 3 or key2 > 1020;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t0	index_merge	i1,i2	i1,i2	4,4	NULL	2	Using sort_union(i1,i2); Using where
+select * from t0 where key1 < 3 or key2 > 1020;
+key1	key2	key3	key4	key5	key6	key7	key8
+1	1	1	1	1	1	1	1023
+2	2	2	2	2	2	2	1022
+1021	1021	1021	1021	1021	1021	1021	3
+1022	1022	1022	1022	1022	1022	1022	2
+1023	1023	1023	1023	1023	1023	1023	1
+1024	1024	1024	1024	1024	1024	1024	0
+explain select * from t0 where key1 < 2 or key2 <3;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t0	index_merge	i1,i2	i1,i2	4,4	NULL	#	Using sort_union(i1,i2); Using where
+explain
+select * from t0 where (key1 > 30 and key1<35) or (key2 >32 and key2 < 40);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t0	index_merge	i1,i2	i1,i2	4,4	NULL	#	Using sort_union(i1,i2); Using where
+select * from t0 where (key1 > 30 and key1<35) or (key2 >32 and key2 < 40);
+key1	key2	key3	key4	key5	key6	key7	key8
+31	31	31	31	31	31	31	993
+32	32	32	32	32	32	32	992
+33	33	33	33	33	33	33	991
+34	34	34	34	34	34	34	990
+35	35	35	35	35	35	35	989
+36	36	36	36	36	36	36	988
+37	37	37	37	37	37	37	987
+38	38	38	38	38	38	38	986
+39	39	39	39	39	39	39	985
+explain select * from t0 ignore index (i2) where key1 < 3 or key2 <4;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t0	ALL	i1	NULL	NULL	NULL	#	Using where
+explain select * from t0 where (key1 < 3 or key2 <4) and key3 = 50;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t0	ref	i1,i2,i3	i3	4	const	#	Using where
+explain select * from t0 use index (i1,i2) where (key1 < 2 or key2 <3) and key3 = 50;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t0	index_merge	i1,i2	i1,i2	4,4	NULL	#	Using sort_union(i1,i2); Using where
+explain select * from t0 where (key1 > 1 or key2  > 2);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t0	ALL	i1,i2	NULL	NULL	NULL	#	Using where
+explain select * from t0 force index (i1,i2) where (key1 > 1 or key2  > 2);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t0	index_merge	i1,i2	i1,i2	4,4	NULL	#	Using sort_union(i1,i2); Using where
+explain
+select * from t0 where key1<2 or key2<3 or (key1>5 and key1<7) or
+(key1>10 and key1<12) or (key2>100 and key2<102);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t0	index_merge	i1,i2	i1,i2	4,4	NULL	#	Using sort_union(i1,i2); Using where
+explain select * from t0 where key2 = 45 or key1 <=> null;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t0	range	i1,i2	i2	4	NULL	#	Using where
+explain select * from t0 where key2 = 45 or key1 is not null;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t0	ALL	i1,i2	NULL	NULL	NULL	#	Using where
+explain select * from t0 where key2 = 45 or key1 is null;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t0	ref	i2	i2	4	const	#	NULL
+explain select * from t0 where key2=10 or key3=3 or key4 <=> null;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t0	index_merge	i2,i3,i4	i2,i3	4,4	NULL	#	Using union(i2,i3); Using where
+explain select * from t0 where key2=10 or key3=3 or key4 is null;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t0	index_merge	i2,i3	i2,i3	4,4	NULL	#	Using union(i2,i3); Using where
+explain select key1 from t0 where (key1 <=> null) or (key2 < 2) or
+(key3=10) or (key4 <=> null);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t0	index_merge	i1,i2,i3,i4	i2,i3	4,4	NULL	#	Using sort_union(i2,i3); Using where
+explain select key1 from t0 where (key1 <=> null) or (key1 < 5) or
+(key3=10) or (key4 <=> null);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t0	index_merge	i1,i3,i4	i1,i3	4,4	NULL	#	Using sort_union(i1,i3); Using where
+explain select * from t0 where
+(key1 < 2 or key2 < 2) and (key3 < 3 or key4 < 3) and (key5 < 5 or key6 < 5);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t0	index_merge	i1,i2,i3,i4,i5,i6	i1,i2	4,4	NULL	#	Using sort_union(i1,i2); Using where
+explain
+select * from t0 where (key1 < 2 or key2 < 4) and (key1 < 5 or key3 < 3);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t0	index_merge	i1,i2,i3	i1,i2	4,4	NULL	#	Using sort_union(i1,i2); Using where
+select * from t0 where (key1 < 2 or key2 < 4) and (key1 < 5 or key3 < 3);
+key1	key2	key3	key4	key5	key6	key7	key8
+1	1	1	1	1	1	1	1023
+2	2	2	2	2	2	2	1022
+3	3	3	3	3	3	3	1021
+explain select * from t0 where
+(key1 < 3 or key2 < 2) and (key3 < 3 or key4 < 3) and (key5 < 2 or key6 < 2);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t0	index_merge	i1,i2,i3,i4,i5,i6	i1,i2	4,4	NULL	#	Using sort_union(i1,i2); Using where
+explain select * from t0 where
+(key1 < 3 or key2 < 3) and (key3 < 70);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t0	range	i1,i2,i3	i3	4	NULL	#	Using index condition; Using where
+explain select * from t0 where
+(key1 < 3 or key2 < 3) and (key3 < 1000);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t0	index_merge	i1,i2,i3	i1,i2	4,4	NULL	#	Using sort_union(i1,i2); Using where
+explain select * from t0 where
+((key1 < 3 or key2 < 3) and (key2 <4 or key3 < 3))
+or
+key2 > 4;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t0	ALL	i1,i2,i3	NULL	NULL	NULL	#	Using where
+explain select * from t0 where
+((key1 < 4 or key2 < 4) and (key2 <4 or key3 < 3))
+or
+key1 < 5;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t0	index_merge	i1,i2,i3	i1,i2	4,4	NULL	#	Using sort_union(i1,i2); Using where
+select * from t0 where
+((key1 < 4 or key2 < 4) and (key2 <4 or key3 < 3))
+or
+key1 < 5;
+key1	key2	key3	key4	key5	key6	key7	key8
+1	1	1	1	1	1	1	1023
+2	2	2	2	2	2	2	1022
+3	3	3	3	3	3	3	1021
+4	4	4	4	4	4	4	1020
+explain select * from t0 where
+((key1 < 2 or key2 < 2) and (key3 <4 or key5 < 3))
+or
+((key5 < 3 or key6 < 3) and (key7 <3 or key8 < 3));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t0	index_merge	i1,i2,i3,i5,i6,i7,i8	i1,i2,i5,i6	4,4,4,4	NULL	#	Using sort_union(i1,i2,i5,i6); Using where
+explain select * from t0 where
+((key3 <3 or key5 < 4) and (key1 < 3 or key2 < 3))
+or
+((key7 <5 or key8 < 3) and (key5 < 4 or key6 < 4));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t0	index_merge	i1,i2,i3,i5,i6,i7,i8	i3,i5,i7,i8	4,4,4,4	NULL	#	Using sort_union(i3,i5,i7,i8); Using where
+explain select * from t0 where
+((key3 <3 or key5 < 4) and (key1 < 3 or key2 < 4))
+or
+((key3 <4 or key5 < 2) and (key5 < 5 or key6 < 3));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t0	index_merge	i1,i2,i3,i5,i6	i3,i5	4,4	NULL	#	Using sort_union(i3,i5); Using where
+explain select * from t0 where
+((key3 <4 or key5 < 3) and (key1 < 3 or key2 < 3))
+or
+(((key3 <5 and key7 < 5) or key5 < 2) and (key5 < 4 or key6 < 4));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t0	index_merge	i1,i2,i3,i5,i6,i7	i3,i5	4,4	NULL	#	Using sort_union(i3,i5); Using where
+explain select * from t0 where
+((key3 <5 or key5 < 4) and (key1 < 4 or key2 < 4))
+or
+((key3 >5 or key5 < 2) and (key5 < 5 or key6 < 6));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t0	ALL	i1,i2,i3,i5,i6	NULL	NULL	NULL	#	Using where
+explain select * from t0 force index(i1, i2, i3, i4, i5, i6 ) where
+((key3 <3 or key5 < 4) and (key1 < 3 or key2 < 3))
+or
+((key3 >4 or key5 < 2) and (key5 < 5 or key6 < 4));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t0	index_merge	i1,i2,i3,i5,i6	i3,i5	4,4	NULL	#	Using sort_union(i3,i5); Using where
+explain select * from t0 force index(i1, i2, i3, i4, i5, i6 ) where
+((key3 <5 or key5 < 4) and (key1 < 4 or key2 < 4))
+or
+((key3 >=5 or key5 < 2) and (key5 < 5 or key6 < 6));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t0	ALL	i1,i2,i3,i5,i6	NULL	NULL	NULL	#	Using where
+select * from t0 where key1 < 3 or key8 < 2 order by key1;
+key1	key2	key3	key4	key5	key6	key7	key8
+1	1	1	1	1	1	1	1023
+2	2	2	2	2	2	2	1022
+1023	1023	1023	1023	1023	1023	1023	1
+1024	1024	1024	1024	1024	1024	1024	0
+explain
+select * from t0 where key1 < 3 or key8 < 2 order by key1;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t0	index_merge	i1,i8	i1,i8	4,4	NULL	#	Using sort_union(i1,i8); Using where; Using filesort
+create table t2 like t0;
+insert into t2 select * from t0;
+alter table t2 add index i1_3(key1, key3);
+alter table t2 add index i2_3(key2, key3);
+alter table t2 drop index i1;
+alter table t2 drop index i2;
+alter table t2 add index i321(key3, key2, key1);
+explain select key3 from t2 where key1 = 100 or key2 = 100;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t2	index_merge	i1_3,i2_3	i1_3,i2_3	4,4	NULL	#	Using sort_union(i1_3,i2_3); Using where
+explain select key3 from t2 where key1 <100 or key2 < 100;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t2	index_merge	i1_3,i2_3	i1_3,i2_3	4,4	NULL	#	Using sort_union(i1_3,i2_3); Using where
+explain select key7 from t2 where key1 <100 or key2 < 100;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t2	index_merge	i1_3,i2_3	i1_3,i2_3	4,4	NULL	#	Using sort_union(i1_3,i2_3); Using where
+create table t4 (
+key1a int not null,
+key1b int not null,
+key2  int not null,
+key2_1 int not null,
+key2_2 int not null,
+key3  int not null,
+index i1a (key1a, key1b),
+index i1b (key1b, key1a),
+index i2_1(key2, key2_1),
+index i2_2(key2, key2_1)
+);
+Warnings:
+Note	1831	Duplicate index 'i2_2' defined on the table 'test.t4'. This is deprecated and will be disallowed in a future release.
+insert into t4 select key1,key1,key1 div 10, key1 % 10, key1 % 10, key1 from t0;
+select * from t4 where key1a = 3 or key1b = 4;
+key1a	key1b	key2	key2_1	key2_2	key3
+3	3	0	3	3	3
+4	4	0	4	4	4
+explain select * from t4 where key1a = 3 or key1b = 4;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t4	index_merge	i1a,i1b	i1a,i1b	4,4	NULL	2	Using sort_union(i1a,i1b); Using where
+explain select * from t4 where key2 = 1 and (key2_1 = 1 or key3 = 5);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t4	ref	i2_1,i2_2	i2_1	4	const	1	Using where
+explain select * from t4 where key2 = 1 and (key2_1 = 1 or key2_2 = 5);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t4	ref	i2_1,i2_2	i2_1	4	const	1	Using where
+explain select * from t4 where key2_1 = 1 or key2_2 = 5;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t4	ALL	NULL	NULL	NULL	NULL	#	Using where
+create table t1 like t0;
+insert into t1 select * from t0;
+explain select * from t0 left join t1 on (t0.key1=t1.key1)
+where t0.key1=3 or t0.key2=4;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t0	index_merge	i1,i2	i1,i2	4,4	NULL	2	Using union(i1,i2); Using where
+1	SIMPLE	t1	ref	i1	i1	4	test.t0.key1	1	NULL
+select * from t0 left join t1 on (t0.key1=t1.key1)
+where t0.key1=3 or t0.key2=4;
+key1	key2	key3	key4	key5	key6	key7	key8	key1	key2	key3	key4	key5	key6	key7	key8
+3	3	3	3	3	3	3	1021	3	3	3	3	3	3	3	1021
+4	4	4	4	4	4	4	1020	4	4	4	4	4	4	4	1020
+explain
+select * from t0,t1 where (t0.key1=t1.key1) and ( t0.key1=3 or t0.key2=4);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t0	index_merge	i1,i2	i1,i2	4,4	NULL	2	Using union(i1,i2); Using where
+1	SIMPLE	t1	ref	i1	i1	4	test.t0.key1	1	NULL
+explain
+select * from t0,t1 where (t0.key1=t1.key1) and
+(t0.key1=3 or t0.key2<4) and t1.key1=2;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t0	ref	i1,i2	i1	4	const	1	Using where
+1	SIMPLE	t1	ref	i1	i1	4	const	1	NULL
+explain select * from t0,t1 where t0.key1 = 5 and
+(t1.key1 = t0.key1 or t1.key8 = t0.key1);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t0	ref	i1	i1	4	const	1	NULL
+1	SIMPLE	t1	index_merge	i1,i8	i1,i8	4,4	NULL	2	Using union(i1,i8); Using where; Using join buffer (Block Nested Loop)
+explain select * from t0,t1 where t0.key1 < 3 and
+(t1.key1 = t0.key1 or t1.key8 = t0.key1);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t0	range	i1	i1	4	NULL	#	Using index condition
+1	SIMPLE	t1	ALL	i1,i8	NULL	NULL	NULL	#	Range checked for each record (index map: 0x81)
+explain select * from t1 where key1=3 or key2=4
+union select * from t1 where key1<4 or key3=5;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t1	index_merge	i1,i2	i1,i2	4,4	NULL	2	Using union(i1,i2); Using where
+2	UNION	t1	index_merge	i1,i3	i1,i3	4,4	NULL	2	Using sort_union(i1,i3); Using where
+NULL	UNION RESULT	<union1,2>	ALL	NULL	NULL	NULL	NULL	NULL	Using temporary
+explain select * from (select * from t1 where key1 = 3 or key2 =3) as Z where key8 >5;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	2	Using where
+2	DERIVED	t1	index_merge	i1,i2	i1,i2	4,4	NULL	2	Using union(i1,i2); Using where
+create table t3 like t0;
+insert into t3 select * from t0;
+alter table t3 add key9 int not null, add index i9(key9);
+alter table t3 add keyA int not null, add index iA(keyA);
+alter table t3 add keyB int not null, add index iB(keyB);
+alter table t3 add keyC int not null, add index iC(keyC);
+update t3 set key9=key1,keyA=key1,keyB=key1,keyC=key1;
+explain select * from t3 where
+key1=1 or key2=2 or key3=3 or key4=4 or
+key5=5 or key6=6 or key7=7 or key8=8 or
+key9=9 or keyA=10 or keyB=11 or keyC=12;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t3	index_merge	i1,i2,i3,i4,i5,i6,i7,i8,i9,iA,iB,iC	i1,i2,i3,i4,i5,i6,i7,i8,i9,iA,iB,iC	4,4,4,4,4,4,4,4,4,4,4,4	NULL	12	Using union(i1,i2,i3,i4,i5,i6,i7,i8,i9,iA,iB,iC); Using where
+select * from t3 where
+key1=1 or key2=2 or key3=3 or key4=4 or
+key5=5 or key6=6 or key7=7 or key8=8 or
+key9=9 or keyA=10 or keyB=11 or keyC=12;
+key1	key2	key3	key4	key5	key6	key7	key8	key9	keyA	keyB	keyC
+1	1	1	1	1	1	1	1023	1	1	1	1
+2	2	2	2	2	2	2	1022	2	2	2	2
+3	3	3	3	3	3	3	1021	3	3	3	3
+4	4	4	4	4	4	4	1020	4	4	4	4
+5	5	5	5	5	5	5	1019	5	5	5	5
+6	6	6	6	6	6	6	1018	6	6	6	6
+7	7	7	7	7	7	7	1017	7	7	7	7
+9	9	9	9	9	9	9	1015	9	9	9	9
+10	10	10	10	10	10	10	1014	10	10	10	10
+11	11	11	11	11	11	11	1013	11	11	11	11
+12	12	12	12	12	12	12	1012	12	12	12	12
+1016	1016	1016	1016	1016	1016	1016	8	1016	1016	1016	1016
+explain select * from t0 where key1 < 3 or key2 < 4;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t0	index_merge	i1,i2	i1,i2	4,4	NULL	2	Using sort_union(i1,i2); Using where
+select * from t0 where key1 < 3 or key2 < 4;
+key1	key2	key3	key4	key5	key6	key7	key8
+1	1	1	1	1	1	1	1023
+2	2	2	2	2	2	2	1022
+3	3	3	3	3	3	3	1021
+update t0 set key8=123 where key1 < 3 or key2 < 4;
+select * from t0 where key1 < 3 or key2 < 4;
+key1	key2	key3	key4	key5	key6	key7	key8
+1	1	1	1	1	1	1	123
+2	2	2	2	2	2	2	123
+3	3	3	3	3	3	3	123
+delete from t0 where key1 < 3 or key2 < 4;
+select * from t0 where key1 < 3 or key2 < 4;
+key1	key2	key3	key4	key5	key6	key7	key8
+select count(*) from t0;
+count(*)
+1021
+drop table t4;
+create table t4 (a int);
+insert into t4 values (1),(4),(3);
+set @save_join_buffer_size=@@join_buffer_size;
+set join_buffer_size= 4096;
+explain select max(A.key1 + B.key1 + A.key2 + B.key2 + A.key3 + B.key3 + A.key4 + B.key4 + A.key5 + B.key5)
+from t0 as A force index(i1,i2), t0 as B force index (i1,i2)
+where (A.key1 < 500000 or A.key2 < 3)
+and   (B.key1 < 500000 or B.key2 < 3);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	A	index_merge	i1,i2	i1,i2	4,4	NULL	#	Using sort_union(i1,i2); Using where
+1	SIMPLE	B	index_merge	i1,i2	i1,i2	4,4	NULL	#	Using sort_union(i1,i2); Using where; Using join buffer (Block Nested Loop)
+select max(A.key1 + B.key1 + A.key2 + B.key2 + A.key3 + B.key3 + A.key4 + B.key4 + A.key5 + B.key5)
+from t0 as A force index(i1,i2), t0 as B force index (i1,i2)
+where (A.key1 < 500000 or A.key2 < 3)
+and   (B.key1 < 500000 or B.key2 < 3);
+max(A.key1 + B.key1 + A.key2 + B.key2 + A.key3 + B.key3 + A.key4 + B.key4 + A.key5 + B.key5)
+10240
+update t0 set key1=1;
+explain select max(A.key1 + B.key1 + A.key2 + B.key2 + A.key3 + B.key3 + A.key4 + B.key4 + A.key5 + B.key5)
+from t0 as A force index(i1,i2), t0 as B force index (i1,i2)
+where (A.key1 = 1 or A.key2 = 1)
+and   (B.key1 = 1 or B.key2 = 1);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	A	index_merge	i1,i2	i1,i2	4,4	NULL	#	Using union(i1,i2); Using where
+1	SIMPLE	B	index_merge	i1,i2	i1,i2	4,4	NULL	#	Using union(i1,i2); Using where; Using join buffer (Block Nested Loop)
+select max(A.key1 + B.key1 + A.key2 + B.key2 + A.key3 + B.key3 + A.key4 + B.key4 + A.key5 + B.key5)
+from t0 as A force index(i1,i2), t0 as B force index (i1,i2)
+where (A.key1 = 1 or A.key2 = 1)
+and   (B.key1 = 1 or B.key2 = 1);
+max(A.key1 + B.key1 + A.key2 + B.key2 + A.key3 + B.key3 + A.key4 + B.key4 + A.key5 + B.key5)
+8194
+alter table t0 add filler1 char(200), add filler2 char(200), add filler3 char(200);
+update t0 set key2=1, key3=1, key4=1, key5=1,key6=1,key7=1 where key7 < 500;
+select max(A.key1 + B.key1 + A.key2 + B.key2 + A.key3 + B.key3 + A.key4 + B.key4 + A.key5 + B.key5)
+from t0 as A, t0 as B
+where (A.key1 = 1 and A.key2 = 1 and A.key3 = 1 and A.key4=1 and A.key5=1 and A.key6=1 and A.key7 = 1 or A.key8=1)
+and (B.key1 = 1 and B.key2 = 1 and B.key3 = 1 and B.key4=1 and B.key5=1 and B.key6=1 and B.key7 = 1 or B.key8=1);
+max(A.key1 + B.key1 + A.key2 + B.key2 + A.key3 + B.key3 + A.key4 + B.key4 + A.key5 + B.key5)
+8186
+set join_buffer_size= @save_join_buffer_size;
+drop table t0, t1, t2, t3, t4;
+CREATE TABLE t1 (
+cola char(3) not null, colb char(3) not null,  filler char(200),
+key(cola), key(colb)
+);
+INSERT INTO t1 VALUES ('foo','bar', 'ZZ'),('fuz','baz', 'ZZ');
+OPTIMIZE TABLE t1;
+Table	Op	Msg_type	Msg_text
+test.t1	optimize	status	OK
+select count(*) from t1;
+count(*)
+8704
+explain select * from t1 WHERE cola = 'foo' AND colb = 'bar';
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	index_merge	cola,colb	cola,colb	3,3	NULL	#	Using intersect(cola,colb); Using where
+explain select * from t1 force index(cola,colb) WHERE cola = 'foo' AND colb = 'bar';
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	index_merge	cola,colb	cola,colb	3,3	NULL	#	Using intersect(cola,colb); Using where
+drop table t1;
+CREATE TABLE t1(a INT);
+INSERT INTO t1 VALUES(1);
+CREATE TABLE t2(a INT, b INT, dummy CHAR(16) DEFAULT '', KEY(a), KEY(b));
+INSERT INTO t2(a,b) VALUES
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
+(1,2);
+LOCK TABLES t1 WRITE, t2 WRITE;
+INSERT INTO t2(a,b) VALUES(1,2);
+SELECT t2.a FROM t1,t2 WHERE t2.b=2 AND t2.a=1;
+a
+1
+1
+UNLOCK TABLES;
+DROP TABLE t1, t2;
+CREATE TABLE `t1` (
+`a` int(11) DEFAULT NULL,
+`filler` char(200) DEFAULT NULL,
+`b` int(11) DEFAULT NULL,
+KEY `a` (`a`),
+KEY `b` (`b`)
+) ENGINE=MEMORY DEFAULT CHARSET=latin1;
+insert into t1 values
+(0, 'filler', 0), (1, 'filler', 1), (2, 'filler', 2), (3, 'filler', 3), 
+(4, 'filler', 4), (5, 'filler', 5), (6, 'filler', 6), (7, 'filler', 7), 
+(8, 'filler', 8), (9, 'filler', 9), (0, 'filler', 0), (1, 'filler', 1), 
+(2, 'filler', 2), (3, 'filler', 3), (4, 'filler', 4), (5, 'filler', 5), 
+(6, 'filler', 6), (7, 'filler', 7), (8, 'filler', 8), (9, 'filler', 9), 
+(10, 'filler', 10), (11, 'filler', 11), (12, 'filler', 12), (13, 'filler', 13),
+(14, 'filler', 14), (15, 'filler', 15), (16, 'filler', 16), (17, 'filler', 17), 
+(18, 'filler', 18), (19, 'filler', 19), (4, '5      ', 0), (5, '4      ', 0), 
+(4, '4      ', 0), (4, 'qq     ', 5), (5, 'qq     ', 4), (4, 'zz     ', 4);
+create table t2(
+`a` int(11) DEFAULT NULL,
+`filler` char(200) DEFAULT NULL,
+`b` int(11) DEFAULT NULL,
+KEY USING BTREE (`a`),
+KEY USING BTREE (`b`)
+) ENGINE=MEMORY DEFAULT CHARSET=latin1;
+insert into t2 select * from t1;
+must use sort-union rather than union:
+explain select * from t1 where a=4 or b=4;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	index_merge	a,b	a,b	5,5	NULL	#	Using sort_union(a,b); Using where
+select * from t1 where a=4 or b=4;
+a	filler	b
+4	4	0
+4	5	0
+4	filler	4
+4	filler	4
+4	qq	5
+4	zz	4
+5	qq	4
+select * from t1 ignore index(a,b) where a=4 or b=4;
+a	filler	b
+4	4	0
+4	5	0
+4	filler	4
+4	filler	4
+4	qq	5
+4	zz	4
+5	qq	4
+must use union, not sort-union:
+explain select * from t2 where a=4 or b=4;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t2	index_merge	a,b	a,b	5,5	NULL	#	Using union(a,b); Using where
+select * from t2 where a=4 or b=4;
+a	filler	b
+4	4	0
+4	5	0
+4	filler	4
+4	filler	4
+4	qq	5
+4	zz	4
+5	qq	4
+drop table t1, t2;
+CREATE TABLE t1 (a varchar(8), b set('a','b','c','d','e','f','g','h'),
+KEY b(b), KEY a(a));
+INSERT INTO t1 VALUES ('y',''), ('z','');
+SELECT b,a from t1 WHERE (b!='c' AND b!='f' && b!='h') OR 
+(a='pure-S') OR (a='DE80337a') OR (a='DE80799');
+b	a
+	y
+	z
+DROP TABLE t1;
+#
+# BUG#40974: Incorrect query results when using clause evaluated using range check
+#
+create table t0 (a int);
+insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
+create table t1 (a int);
+insert into t1 values (1),(2);
+create table t2(a int, b int);
+insert into t2 values (1,1), (2, 1000);
+create table t3 (a int, b int, filler char(100), key(a), key(b));
+insert into t3 select 1000, 1000,'filler' from t0 A, t0 B, t0 C;
+insert into t3 values (1,1,'data');
+insert into t3 values (1,1,'data');
+The plan should be ALL/ALL/ALL(Range checked for each record (index map: 0x3)
+explain select * from t1 
+where exists (select 1 from t2, t3 
+where t2.a=t1.a and (t3.a=t2.b or t3.b=t2.b or t3.b=t2.b+1));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	#	Using where
+2	DEPENDENT SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	#	Using where
+2	DEPENDENT SUBQUERY	t3	ALL	a,b	NULL	NULL	NULL	#	Range checked for each record (index map: 0x3)
+select * from t1 
+where exists (select 1 from t2, t3 
+where t2.a=t1.a and (t3.a=t2.b or t3.b=t2.b or t3.b=t2.b+1));
+a
+1
+2
+drop table t0, t1, t2, t3;
+#
+# BUG#44810: index merge and order by with low sort_buffer_size 
+# crashes server!
+#
+CREATE TABLE t1(a VARCHAR(128),b VARCHAR(128),KEY(A),KEY(B));
+INSERT INTO t1 VALUES (REPEAT('a',128),REPEAT('b',128));
+INSERT INTO t1 SELECT * FROM t1;
+INSERT INTO t1 SELECT * FROM t1;
+INSERT INTO t1 SELECT * FROM t1;
+INSERT INTO t1 SELECT * FROM t1;
+INSERT INTO t1 SELECT * FROM t1;
+INSERT INTO t1 SELECT * FROM t1;
+SET SESSION sort_buffer_size=1;
+Warnings:
+Warning	1292	Truncated incorrect sort_buffer_size value: '1'
+EXPLAIN 
+SELECT * FROM t1 FORCE INDEX(a,b) WHERE a LIKE 'a%' OR b LIKE 'b%' 
+ORDER BY a,b;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	index_merge	a,b	a,b	131,131	NULL	#	Using sort_union(a,b); Using where; Using filesort
+SELECT * FROM t1 FORCE INDEX(a,b) WHERE a LIKE 'a%' OR b LIKE 'b%' 
+ORDER BY a,b;
+SET SESSION sort_buffer_size=DEFAULT;
+DROP TABLE t1;
+End of 5.0 tests
+set global rocksdb_force_flush_memtable_now=1;
+#---------------- ROR-index_merge tests -----------------------
+SET SESSION DEFAULT_STORAGE_ENGINE = RocksDB;
+drop table if exists  t0,t1,t2;
+create table t1
+(
+/* Field names reflect value(rowid) distribution, st=STairs, swt= SaWTooth */
+st_a int not null default 0,
+swt1a int not null default 0,
+swt2a int not null default 0,
+st_b int not null default 0,
+swt1b int not null default 0,
+swt2b int not null default 0,
+/* fields/keys for row retrieval tests */
+key1 int,
+key2 int,
+key3 int,
+key4 int,
+/* make rows much bigger then keys */
+filler1 char (200),
+filler2 char (200),
+filler3 char (200),
+filler4 char (200),
+filler5 char (200),
+filler6 char (200),
+/* order of keys is important */
+key sta_swt12a(st_a,swt1a,swt2a),
+key sta_swt1a(st_a,swt1a),
+key sta_swt2a(st_a,swt2a),
+key sta_swt21a(st_a,swt2a,swt1a),
+key st_a(st_a),
+key stb_swt1a_2b(st_b,swt1b,swt2a),
+key stb_swt1b(st_b,swt1b),
+key st_b(st_b),
+key(key1),
+key(key2),
+key(key3),
+key(key4)
+) ;
+create table t0 as select * from t1;
+# Printing of many insert into t0 values (....) disabled.
+alter table t1 disable keys;
+Warnings:
+Note	1031	Table storage engine for 't1' doesn't have this option
+# Printing of many insert into t1 select .... from t0 disabled.
+# Printing of many insert into t1 (...) values (....) disabled.
+alter table t1 enable keys;
+Warnings:
+Note	1031	Table storage engine for 't1' doesn't have this option
+select count(*) from t1;
+count(*)
+64801
+explain select key1,key2 from t1 where key1=100 and key2=100;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	index_merge	key1,key2	key2,key1	5,5	NULL	2	Using intersect(key2,key1); Using where; Using index
+select key1,key2 from t1 where key1=100 and key2=100;
+key1	key2
+100	100
+select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
+key1	key2	key3	key4	filler1
+100	100	100	100	key1-key2-key3-key4
+insert into t1 (key1, key2, key3, key4, filler1) values (100, 100, -1, -1, 'key1-key2');
+insert into t1 (key1, key2, key3, key4, filler1) values (-1, -1, 100, 100, 'key4-key3');
+select key1,key2,filler1 from t1 where key1=100 and key2=100;
+key1	key2	filler1
+100	100	key1-key2-key3-key4
+100	100	key1-key2
+select key1,key2 from t1 where key1=100 and key2=100;
+key1	key2
+100	100
+100	100
+select key1,key2,key3,key4 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
+key1	key2	key3	key4
+100	100	100	100
+100	100	-1	-1
+-1	-1	100	100
+select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
+key1	key2	key3	key4	filler1
+100	100	100	100	key1-key2-key3-key4
+100	100	-1	-1	key1-key2
+-1	-1	100	100	key4-key3
+select key1,key2,key3 from t1 where key1=100 and key2=100 and key3=100;
+key1	key2	key3
+100	100	100
+insert into t1 (key1,key2,key3,key4,filler1) values (101,101,101,101, 'key1234-101');
+select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=101;
+key1	key2	key3	key4	filler1
+100	100	100	100	key1-key2-key3-key4
+100	100	-1	-1	key1-key2
+101	101	101	101	key1234-101
+select key1,key2, filler1 from t1 where key1=100 and key2=100;
+key1	key2	filler1
+100	100	key1-key2-key3-key4
+100	100	key1-key2
+update t1 set filler1='to be deleted' where key1=100 and key2=100;
+update t1 set key1=200,key2=200 where key1=100 and key2=100;
+delete from t1 where key1=200 and key2=200;
+select key1,key2,filler1 from t1 where key2=100 and key2=200;
+key1	key2	filler1
+select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
+key1	key2	key3	key4	filler1
+-1	-1	100	100	key4-key3
+delete from t1 where key3=100 and key4=100;
+select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
+key1	key2	key3	key4	filler1
+select key1,key2 from t1 where key1=100 and key2=100;
+key1	key2
+insert into t1 (key1, key2, key3, key4, filler1) values (100, 100, 200, 200,'key1-key2-key3-key4-1');
+insert into t1 (key1, key2, key3, key4, filler1) values (100, 100, 200, 200,'key1-key2-key3-key4-2');
+insert into t1 (key1, key2, key3, key4, filler1) values (100, 100, 200, 200,'key1-key2-key3-key4-3');
+select key1,key2,key3,key4,filler1 from t1 where key3=200 or (key1=100 and key2=100) or key4=200;
+key1	key2	key3	key4	filler1
+100	100	200	200	key1-key2-key3-key4-1
+100	100	200	200	key1-key2-key3-key4-2
+100	100	200	200	key1-key2-key3-key4-3
+insert into t1 (key1, key2, key3, key4, filler1) values (-1, -1, -1, 200,'key4');
+select key1,key2,key3,key4,filler1 from t1 where key3=200 or (key1=100 and key2=100) or key4=200;
+key1	key2	key3	key4	filler1
+100	100	200	200	key1-key2-key3-key4-1
+100	100	200	200	key1-key2-key3-key4-2
+100	100	200	200	key1-key2-key3-key4-3
+-1	-1	-1	200	key4
+insert into t1 (key1, key2, key3, key4, filler1) values (-1, -1, 200, -1,'key3');
+select key1,key2,key3,key4,filler1 from t1 where key3=200 or (key1=100 and key2=100) or key4=200;
+key1	key2	key3	key4	filler1
+100	100	200	200	key1-key2-key3-key4-1
+100	100	200	200	key1-key2-key3-key4-2
+100	100	200	200	key1-key2-key3-key4-3
+-1	-1	-1	200	key4
+-1	-1	200	-1	key3
+drop table t0,t1;
+create table t2 (
+a char(10),
+b char(10),
+filler1 char(255),
+filler2 char(255),
+key(a(5)),
+key(b(5))
+);
+select count(a) from t2 where a='BBBBBBBB';
+count(a)
+4
+select count(a) from t2 where b='BBBBBBBB';
+count(a)
+4
+expla_or_bin select count(a_or_b) from t2 where a_or_b='AAAAAAAA' a_or_bnd a_or_b='AAAAAAAA';
+id	select_type	ta_or_ba_or_ble	type	possia_or_ble_keys	key	key_len	ref	rows	Extra_or_b
+1	SIMPLE	t2	ref	a_or_b,a_or_b	a_or_b	6	const	1	Using where
+select count(a) from t2 where a='AAAAAAAA' and b='AAAAAAAA';
+count(a)
+4
+select count(a) from t2 ignore index(a,b) where a='AAAAAAAA' and b='AAAAAAAA';
+count(a)
+4
+insert into t2 values ('ab', 'ab', 'uh', 'oh');
+explain select a from t2 where a='ab';
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t2	ref	a	a	6	const	1	Using where
+drop table t2;
+CREATE TABLE t1(c1 INT, c2 INT DEFAULT 0, c3 CHAR(255) DEFAULT '',
+KEY(c1), KEY(c2), KEY(c3));
+INSERT INTO t1(c1) VALUES(0),(0),(0),(0),(0),(0),(0),(0),(0),(0),(0),(0),(0),
+(0),(0),(0),(0),(0),(0),(0),(0),(0),(0),(0),(0),(0),(0),(0),(0);
+INSERT INTO t1 VALUES(0,0,0);
+CREATE TABLE t2(c1 int);
+INSERT INTO t2 VALUES(1);
+DELETE t1 FROM t1,t2 WHERE t1.c1=0 AND t1.c2=0;
+SELECT * FROM t1;
+c1	c2	c3
+DROP TABLE t1,t2;
+set global rocksdb_force_flush_memtable_now=1;
+#---------------- Index merge test 2 -------------------------------------------
+SET SESSION DEFAULT_STORAGE_ENGINE = RocksDB;
+drop table if exists t1,t2;
+create table t1
+(
+key1 int not null,
+key2 int not null,
+INDEX i1(key1),
+INDEX i2(key2)
+);
+explain select * from t1 where key1 < 5 or key2 > 197;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	index_merge	i1,i2	i1,i2	4,4	NULL	2	Using sort_union(i1,i2); Using where
+select * from t1 where key1 < 5 or key2 > 197;
+key1	key2
+0	200
+1	199
+2	198
+3	197
+4	196
+explain select * from t1 where key1 < 3 or key2 > 195;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	index_merge	i1,i2	i1,i2	4,4	NULL	2	Using sort_union(i1,i2); Using where
+select * from t1 where key1 < 3 or key2 > 195;
+key1	key2
+0	200
+1	199
+2	198
+3	197
+4	196
+alter table t1 add str1 char (255) not null,
+add zeroval int not null default 0,
+add str2 char (255) not null,
+add str3 char (255) not null;
+update t1 set str1='aaa', str2='bbb', str3=concat(key2, '-', key1 div 2, '_' ,if(key1 mod 2 = 0, 'a', 'A'));
+alter table t1 add primary key (str1, zeroval, str2, str3);
+explain select * from t1 where key1 < 5 or key2 > 197;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	ALL	i1,i2	NULL	NULL	NULL	200	Using where
+select * from t1 where key1 < 5 or key2 > 197;
+key1	key2	str1	zeroval	str2	str3
+4	196	aaa	0	bbb	196-2_a
+3	197	aaa	0	bbb	197-1_A
+2	198	aaa	0	bbb	198-1_a
+1	199	aaa	0	bbb	199-0_A
+0	200	aaa	0	bbb	200-0_a
+explain select * from t1 where key1 < 3 or key2 > 195;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	ALL	i1,i2	NULL	NULL	NULL	200	Using where
+select * from t1 where key1 < 3 or key2 > 195;
+key1	key2	str1	zeroval	str2	str3
+4	196	aaa	0	bbb	196-2_a
+3	197	aaa	0	bbb	197-1_A
+2	198	aaa	0	bbb	198-1_a
+1	199	aaa	0	bbb	199-0_A
+0	200	aaa	0	bbb	200-0_a
+drop table t1;
+create table t1 (
+pk    integer not null auto_increment primary key,
+key1  integer,
+key2  integer not null,
+filler char  (200),
+index (key1),
+index (key2)
+);
+show warnings;
+Level	Code	Message
+explain select pk from t1 where key1 = 1 and key2 = 1;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	ref	key1,key2	key1	5	const	1	Using where
+select pk from t1 where key2 = 1 and key1 = 1;
+pk
+26
+27
+select pk from t1 ignore index(key1,key2) where key2 = 1 and key1 = 1;
+pk
+26
+27
+drop table t1;
+create table t1 (
+pk int primary key auto_increment,
+key1a  int,
+key2a  int,
+key1b  int,
+key2b  int,
+dummy1 int,
+dummy2 int,
+dummy3 int,
+dummy4 int,
+key3a  int,
+key3b  int,
+filler1 char (200),
+index i1(key1a, key1b),
+index i2(key2a, key2b),
+index i3(key3a, key3b)
+);
+create table t2 (a int);
+insert into t2 values (0),(1),(2),(3),(4),(NULL);
+insert into t1 (key1a, key1b, key2a, key2b, key3a, key3b)
+select A.a, B.a, C.a, D.a, C.a, D.a from t2 A,t2 B,t2 C, t2 D;
+insert into t1 (key1a, key1b, key2a, key2b, key3a, key3b)
+select key1a, key1b, key2a, key2b, key3a, key3b from t1;
+insert into t1 (key1a, key1b, key2a, key2b, key3a, key3b)
+select key1a, key1b, key2a, key2b, key3a, key3b from t1;
+analyze table t1;
+Table	Op	Msg_type	Msg_text
+test.t1	analyze	status	OK
+select count(*) from t1;
+count(*)
+5184
+select count(*) from t1 where
+key1a = 2 and key1b is null and key2a = 2 and key2b is null;
+count(*)
+4
+select count(*) from t1 where
+key1a = 2 and key1b is null and key3a = 2 and key3b is null;
+count(*)
+4
+drop table t1,t2;
+create table t1 (
+id1 int,
+id2 date ,
+index idx2 (id1,id2),
+index idx1 (id2)
+);
+insert into t1 values(1,'20040101'), (2,'20040102');
+select * from t1  where id1 = 1  and id2= '20040101';
+id1	id2
+1	2004-01-01
+drop table t1;
+drop view if exists v1;
+CREATE TABLE t1 (
+`oid` int(11) unsigned NOT NULL auto_increment,
+`fk_bbk_niederlassung` int(11) unsigned NOT NULL,
+`fk_wochentag` int(11) unsigned NOT NULL,
+`uhrzeit_von` time NOT NULL COMMENT 'HH:MM',
+`uhrzeit_bis` time NOT NULL COMMENT 'HH:MM',
+`geloescht` tinyint(4) NOT NULL,
+`version` int(5) NOT NULL,
+PRIMARY KEY  (`oid`),
+KEY `fk_bbk_niederlassung` (`fk_bbk_niederlassung`),
+KEY `fk_wochentag` (`fk_wochentag`),
+KEY `ix_version` (`version`)
+) DEFAULT CHARSET=latin1;
+insert  into t1 values
+(1, 38, 1, '08:00:00', '13:00:00', 0, 1),
+(2, 38, 2, '08:00:00', '13:00:00', 0, 1),
+(3, 38, 3, '08:00:00', '13:00:00', 0, 1),
+(4, 38, 4, '08:00:00', '13:00:00', 0, 1),
+(5, 38, 5, '08:00:00', '13:00:00', 0, 1),
+(6, 38, 5, '08:00:00', '13:00:00', 1, 2),
+(7, 38, 3, '08:00:00', '13:00:00', 1, 2),
+(8, 38, 1, '08:00:00', '13:00:00', 1, 2),
+(9, 38, 2, '08:00:00', '13:00:00', 1, 2),
+(10, 38, 4, '08:00:00', '13:00:00', 1, 2),
+(11, 38, 1, '08:00:00', '13:00:00', 0, 3),
+(12, 38, 2, '08:00:00', '13:00:00', 0, 3),
+(13, 38, 3, '08:00:00', '13:00:00', 0, 3),
+(14, 38, 4, '08:00:00', '13:00:00', 0, 3),
+(15, 38, 5, '08:00:00', '13:00:00', 0, 3),
+(16, 38, 4, '08:00:00', '13:00:00', 0, 4),
+(17, 38, 5, '08:00:00', '13:00:00', 0, 4),
+(18, 38, 1, '08:00:00', '13:00:00', 0, 4),
+(19, 38, 2, '08:00:00', '13:00:00', 0, 4),
+(20, 38, 3, '08:00:00', '13:00:00', 0, 4),
+(21, 7, 1, '08:00:00', '13:00:00', 0, 1),
+(22, 7, 2, '08:00:00', '13:00:00', 0, 1),
+(23, 7, 3, '08:00:00', '13:00:00', 0, 1),
+(24, 7, 4, '08:00:00', '13:00:00', 0, 1),
+(25, 7, 5, '08:00:00', '13:00:00', 0, 1);
+create view v1 as
+select
+zeit1.oid AS oid,
+zeit1.fk_bbk_niederlassung AS fk_bbk_niederlassung,
+zeit1.fk_wochentag AS fk_wochentag,
+zeit1.uhrzeit_von AS uhrzeit_von,
+zeit1.uhrzeit_bis AS uhrzeit_bis,
+zeit1.geloescht AS geloescht,
+zeit1.version AS version
+from
+t1 zeit1
+where
+(zeit1.version =
+(select max(zeit2.version) AS `max(version)`
+   from t1 zeit2
+where
+((zeit1.fk_bbk_niederlassung = zeit2.fk_bbk_niederlassung) and
+(zeit1.fk_wochentag = zeit2.fk_wochentag) and
+(zeit1.uhrzeit_von = zeit2.uhrzeit_von) and
+(zeit1.uhrzeit_bis = zeit2.uhrzeit_bis)
+)
+)
+)
+and (zeit1.geloescht = 0);
+select * from v1 where oid = 21;
+oid	fk_bbk_niederlassung	fk_wochentag	uhrzeit_von	uhrzeit_bis	geloescht	version
+21	7	1	08:00:00	13:00:00	0	1
+drop view v1;
+drop table t1;
+CREATE TABLE t1(
+t_cpac varchar(2) NOT NULL,
+t_vers varchar(4) NOT NULL,
+t_rele varchar(2) NOT NULL,
+t_cust varchar(4) NOT NULL,
+filler1 char(250) default NULL,
+filler2 char(250) default NULL,
+PRIMARY KEY (t_cpac,t_vers,t_rele,t_cust),
+UNIQUE KEY IX_4 (t_cust,t_cpac,t_vers,t_rele),
+KEY IX_5 (t_vers,t_rele,t_cust)
+);
+insert into t1 values
+('tm','2.5 ','a ','    ','',''), ('tm','2.5U','a ','stnd','',''),
+('da','3.3 ','b ','    ','',''), ('da','3.3U','b ','stnd','',''),
+('tl','7.6 ','a ','    ','',''), ('tt','7.6 ','a ','    ','',''),
+('bc','B61 ','a ','    ','',''), ('bp','B61 ','a ','    ','',''),
+('ca','B61 ','a ','    ','',''), ('ci','B61 ','a ','    ','',''),
+('cp','B61 ','a ','    ','',''), ('dm','B61 ','a ','    ','',''),
+('ec','B61 ','a ','    ','',''), ('ed','B61 ','a ','    ','',''),
+('fm','B61 ','a ','    ','',''), ('nt','B61 ','a ','    ','',''),
+('qm','B61 ','a ','    ','',''), ('tc','B61 ','a ','    ','',''),
+('td','B61 ','a ','    ','',''), ('tf','B61 ','a ','    ','',''),
+('tg','B61 ','a ','    ','',''), ('ti','B61 ','a ','    ','',''),
+('tp','B61 ','a ','    ','',''), ('ts','B61 ','a ','    ','',''),
+('wh','B61 ','a ','    ','',''), ('bc','B61U','a ','stnd','',''),
+('bp','B61U','a ','stnd','',''), ('ca','B61U','a ','stnd','',''),
+('ci','B61U','a ','stnd','',''), ('cp','B61U','a ','stnd','',''),
+('dm','B61U','a ','stnd','',''), ('ec','B61U','a ','stnd','',''),
+('fm','B61U','a ','stnd','',''), ('nt','B61U','a ','stnd','',''),
+('qm','B61U','a ','stnd','',''), ('tc','B61U','a ','stnd','',''),
+('td','B61U','a ','stnd','',''), ('tf','B61U','a ','stnd','',''),
+('tg','B61U','a ','stnd','',''), ('ti','B61U','a ','stnd','',''),
+('tp','B61U','a ','stnd','',''), ('ts','B61U','a ','stnd','',''),
+('wh','B61U','a ','stnd','','');
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `t_cpac` varchar(2) NOT NULL,
+  `t_vers` varchar(4) NOT NULL,
+  `t_rele` varchar(2) NOT NULL,
+  `t_cust` varchar(4) NOT NULL,
+  `filler1` char(250) DEFAULT NULL,
+  `filler2` char(250) DEFAULT NULL,
+  PRIMARY KEY (`t_cpac`,`t_vers`,`t_rele`,`t_cust`),
+  UNIQUE KEY `IX_4` (`t_cust`,`t_cpac`,`t_vers`,`t_rele`),
+  KEY `IX_5` (`t_vers`,`t_rele`,`t_cust`)
+) ENGINE=ROCKSDB DEFAULT CHARSET=latin1
+select t_vers,t_rele,t_cust,filler1 from t1 where t_vers = '7.6';
+t_vers	t_rele	t_cust	filler1
+7.6 	a 	    	
+7.6 	a 	    	
+select t_vers,t_rele,t_cust,filler1 from t1 where t_vers = '7.6'
+  and t_rele='a' and t_cust = ' ';
+t_vers	t_rele	t_cust	filler1
+7.6 	a 	    	
+7.6 	a 	    	
+drop table t1;
+create table t1 (
+pk int(11) not null auto_increment,
+a int(11) not null default '0',
+b int(11) not null default '0',
+c int(11) not null default '0',
+filler1 datetime, filler2 varchar(15),
+filler3 longtext,
+kp1 varchar(4), kp2 varchar(7),
+kp3 varchar(2), kp4 varchar(4),
+kp5 varchar(7),
+filler4 char(1),
+primary key (pk),
+key idx1(a,b,c),
+key idx2(c),
+key idx3(kp1,kp2,kp3,kp4,kp5)
+) default charset=latin1;
+set @fill=NULL;
+SELECT COUNT(*) FROM t1 WHERE b = 0 AND a = 0 AND c = 13286427 AND
+kp1='279' AND kp2='ELM0678' AND kp3='6' AND kp4='10' AND  kp5 = 'R        ';
+COUNT(*)
+1
+drop table t1;
+create table t1
+(
+key1 int not null, 
+key2 int not null default 0,
+key3 int not null default 0
+);
+insert into t1(key1) values (1),(2),(3),(4),(5),(6),(7),(8);
+set @d=8;
+insert into t1 (key1) select key1+@d from t1;
+set @d=@d*2;
+insert into t1 (key1) select key1+@d from t1;
+set @d=@d*2;
+insert into t1 (key1) select key1+@d from t1;
+set @d=@d*2;
+insert into t1 (key1) select key1+@d from t1;
+set @d=@d*2;
+insert into t1 (key1) select key1+@d from t1;
+set @d=@d*2;
+insert into t1 (key1) select key1+@d from t1;
+set @d=@d*2;
+insert into t1 (key1) select key1+@d from t1;
+set @d=@d*2;
+alter table t1 add index i2(key2);
+alter table t1 add index i3(key3);
+update t1 set key2=key1,key3=key1;
+select * from t1 where (key3 > 30 and key3<35) or (key2 >32 and key2 < 40);
+key1	key2	key3
+31	31	31
+32	32	32
+33	33	33
+34	34	34
+35	35	35
+36	36	36
+37	37	37
+38	38	38
+39	39	39
+drop table t1;
+#
+# Bug#56423: Different count with SELECT and CREATE SELECT queries
+#
+CREATE TABLE t1 (
+a INT,
+b INT,
+c INT,
+d INT,
+PRIMARY KEY (a),
+KEY (c),
+KEY bd (b,d)
+);
+INSERT INTO t1 VALUES
+(1, 0, 1, 0),
+(2, 1, 1, 1),
+(3, 1, 1, 1),
+(4, 0, 1, 1);
+EXPLAIN
+SELECT a
+FROM t1
+WHERE c = 1 AND b = 1 AND d = 1;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	ref	c,bd	c	5	const	1	Using where
+CREATE TABLE t2 ( a INT )
+SELECT a
+FROM t1
+WHERE c = 1 AND b = 1 AND d = 1;
+SELECT * FROM t2;
+a
+2
+3
+DROP TABLE t1, t2;
+CREATE TABLE t1( a INT, b INT, KEY(a), KEY(b) );
+INSERT INTO t1 VALUES (1, 2), (1, 2), (1, 2), (1, 2);
+SELECT * FROM t1 FORCE INDEX(a, b) WHERE a = 1 AND b = 2;
+a	b
+1	2
+1	2
+1	2
+1	2
+DROP TABLE t1;
+# Code coverage of fix.
+CREATE TABLE t1 ( a INT NOT NULL AUTO_INCREMENT PRIMARY KEY, b INT);
+INSERT INTO t1 (b) VALUES (1);
+UPDATE t1 SET b = 2 WHERE a = 1;
+SELECT * FROM t1;
+a	b
+1	2
+CREATE TABLE t2 ( a INT NOT NULL AUTO_INCREMENT PRIMARY KEY, b VARCHAR(1) );
+INSERT INTO t2 (b) VALUES ('a');
+UPDATE t2 SET b = 'b' WHERE a = 1;
+SELECT * FROM t2;
+a	b
+1	b
+DROP TABLE t1, t2;
+#
+# BUG#13970015: ASSERT `MIN_ENDP || MAX_ENDP' FAILED IN
+#               HANDLER::MULTI_RANGE_READ_INFO_CONST
+#
+CREATE TABLE t1 (
+pk INT NOT NULL,
+col_int_key INT NOT NULL,
+col_varchar_key VARCHAR(1) NOT NULL,
+PRIMARY KEY (pk),
+KEY col_int_key (col_int_key),
+KEY col_varchar_key (col_varchar_key,col_int_key)
+);
+INSERT INTO t1 VALUES (1,1,'a'), (2,2,'b');
+EXPLAIN
+SELECT col_int_key
+FROM t1
+WHERE col_varchar_key >= 'l' OR 
+(((pk BETWEEN 141 AND 141) OR col_varchar_key <> 'l') 
+AND ((pk BETWEEN 141 AND 141) OR (col_int_key > 141)));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	index	PRIMARY,col_int_key,col_varchar_key	col_varchar_key	7	NULL	2	Using where; Using index
+SELECT col_int_key
+FROM t1
+WHERE col_varchar_key >= 'l' OR 
+(((pk BETWEEN 141 AND 141) OR col_varchar_key <> 'l') 
+AND ((pk BETWEEN 141 AND 141) OR (col_int_key > 141)));
+col_int_key
+DROP TABLE t1;
+set global rocksdb_force_flush_memtable_now=1;
+#---------------- 2-sweeps read Index merge test 2 -------------------------------
+SET SESSION DEFAULT_STORAGE_ENGINE = RocksDB;
+drop table if exists t1;
+create table t1 (
+pk int primary key,
+key1 int,
+key2 int,
+filler char(200),
+filler2 char(200),
+index(key1),
+index(key2)
+);
+select * from t1 where (key1 >= 2 and key1 <= 10) or (pk >= 4 and pk <=8 );
+pk	key1	key2	filler	filler2
+10	10	10	filler-data	filler-data-2
+2	2	2	filler-data	filler-data-2
+3	3	3	filler-data	filler-data-2
+4	4	4	filler-data	filler-data-2
+5	5	5	filler-data	filler-data-2
+6	6	6	filler-data	filler-data-2
+7	7	7	filler-data	filler-data-2
+8	8	8	filler-data	filler-data-2
+9	9	9	filler-data	filler-data-2
+set @maxv=1000;
+select * from t1 where
+(pk < 5) or (pk > 10 and pk < 15) or (pk >= 50 and pk < 55 ) or (pk > @maxv-10)
+or key1=18 or key1=60;
+pk	key1	key2	filler	filler2
+1	1	1	filler-data	filler-data-2
+1000	1000	1000	filler-data	filler-data-2
+11	11	11	filler-data	filler-data-2
+12	12	12	filler-data	filler-data-2
+13	13	13	filler-data	filler-data-2
+14	14	14	filler-data	filler-data-2
+18	18	18	filler-data	filler-data-2
+2	2	2	filler-data	filler-data-2
+3	3	3	filler-data	filler-data-2
+4	4	4	filler-data	filler-data-2
+50	50	50	filler-data	filler-data-2
+51	51	51	filler-data	filler-data-2
+52	52	52	filler-data	filler-data-2
+53	53	53	filler-data	filler-data-2
+54	54	54	filler-data	filler-data-2
+60	60	60	filler-data	filler-data-2
+991	991	991	filler-data	filler-data-2
+992	992	992	filler-data	filler-data-2
+993	993	993	filler-data	filler-data-2
+994	994	994	filler-data	filler-data-2
+995	995	995	filler-data	filler-data-2
+996	996	996	filler-data	filler-data-2
+997	997	997	filler-data	filler-data-2
+998	998	998	filler-data	filler-data-2
+999	999	999	filler-data	filler-data-2
+select * from t1 where
+(pk < 5) or (pk > 10 and pk < 15) or (pk >= 50 and pk < 55 ) or (pk > @maxv-10)
+or key1 < 3 or key1 > @maxv-11;
+pk	key1	key2	filler	filler2
+1	1	1	filler-data	filler-data-2
+1000	1000	1000	filler-data	filler-data-2
+11	11	11	filler-data	filler-data-2
+12	12	12	filler-data	filler-data-2
+13	13	13	filler-data	filler-data-2
+14	14	14	filler-data	filler-data-2
+2	2	2	filler-data	filler-data-2
+3	3	3	filler-data	filler-data-2
+4	4	4	filler-data	filler-data-2
+50	50	50	filler-data	filler-data-2
+51	51	51	filler-data	filler-data-2
+52	52	52	filler-data	filler-data-2
+53	53	53	filler-data	filler-data-2
+54	54	54	filler-data	filler-data-2
+990	990	990	filler-data	filler-data-2
+991	991	991	filler-data	filler-data-2
+992	992	992	filler-data	filler-data-2
+993	993	993	filler-data	filler-data-2
+994	994	994	filler-data	filler-data-2
+995	995	995	filler-data	filler-data-2
+996	996	996	filler-data	filler-data-2
+997	997	997	filler-data	filler-data-2
+998	998	998	filler-data	filler-data-2
+999	999	999	filler-data	filler-data-2
+select * from t1 where
+(pk < 5) or (pk > 10 and pk < 15) or (pk >= 50 and pk < 55 ) or (pk > @maxv-10)
+or
+(key1 < 5) or (key1 > 10 and key1 < 15) or (key1 >= 50 and key1 < 55 ) or (key1 > @maxv-10);
+pk	key1	key2	filler	filler2
+1	1	1	filler-data	filler-data-2
+1000	1000	1000	filler-data	filler-data-2
+11	11	11	filler-data	filler-data-2
+12	12	12	filler-data	filler-data-2
+13	13	13	filler-data	filler-data-2
+14	14	14	filler-data	filler-data-2
+2	2	2	filler-data	filler-data-2
+3	3	3	filler-data	filler-data-2
+4	4	4	filler-data	filler-data-2
+50	50	50	filler-data	filler-data-2
+51	51	51	filler-data	filler-data-2
+52	52	52	filler-data	filler-data-2
+53	53	53	filler-data	filler-data-2
+54	54	54	filler-data	filler-data-2
+991	991	991	filler-data	filler-data-2
+992	992	992	filler-data	filler-data-2
+993	993	993	filler-data	filler-data-2
+994	994	994	filler-data	filler-data-2
+995	995	995	filler-data	filler-data-2
+996	996	996	filler-data	filler-data-2
+997	997	997	filler-data	filler-data-2
+998	998	998	filler-data	filler-data-2
+999	999	999	filler-data	filler-data-2
+select * from t1 where
+(pk > 10 and pk < 15) or (pk >= 50 and pk < 55 )
+or
+(key1 < 5) or (key1 > @maxv-10);
+pk	key1	key2	filler	filler2
+1	1	1	filler-data	filler-data-2
+1000	1000	1000	filler-data	filler-data-2
+11	11	11	filler-data	filler-data-2
+12	12	12	filler-data	filler-data-2
+13	13	13	filler-data	filler-data-2
+14	14	14	filler-data	filler-data-2
+2	2	2	filler-data	filler-data-2
+3	3	3	filler-data	filler-data-2
+4	4	4	filler-data	filler-data-2
+50	50	50	filler-data	filler-data-2
+51	51	51	filler-data	filler-data-2
+52	52	52	filler-data	filler-data-2
+53	53	53	filler-data	filler-data-2
+54	54	54	filler-data	filler-data-2
+991	991	991	filler-data	filler-data-2
+992	992	992	filler-data	filler-data-2
+993	993	993	filler-data	filler-data-2
+994	994	994	filler-data	filler-data-2
+995	995	995	filler-data	filler-data-2
+996	996	996	filler-data	filler-data-2
+997	997	997	filler-data	filler-data-2
+998	998	998	filler-data	filler-data-2
+999	999	999	filler-data	filler-data-2
+drop table t1;
+set global rocksdb_force_flush_memtable_now=1;
+#---------------- Clustered PK ROR-index_merge tests -----------------------------
+SET SESSION DEFAULT_STORAGE_ENGINE = RocksDB;
+drop table if exists  t1;
+create table t1
+(
+pk1 int not null,
+pk2 int not null,
+key1 int not null,
+key2 int not null,
+pktail1ok  int not null,
+pktail2ok  int not null,
+pktail3bad int not null,
+pktail4bad int not null,
+pktail5bad int not null,
+pk2copy int not null,
+badkey  int not null,
+filler1 char (200),
+filler2 char (200),
+key (key1),
+key (key2),
+/* keys with tails from CPK members */
+key (pktail1ok, pk1),
+key (pktail2ok, pk1, pk2),
+key (pktail3bad, pk2, pk1),
+key (pktail4bad, pk1, pk2copy),
+key (pktail5bad, pk1, pk2, pk2copy),
+primary key (pk1, pk2)
+);
+explain select * from t1 where pk1 = 1 and pk2 < 80  and key1=0;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	ref	PRIMARY,key1	key1	8	const,const	ROWS	Using index condition
+select * from t1 where pk1 = 1 and pk2 < 80  and key1=0;
+pk1	pk2	key1	key2	pktail1ok	pktail2ok	pktail3bad	pktail4bad	pktail5bad	pk2copy	badkey	filler1	filler2
+1	10	0	0	0	0	0	0	0	10	0	filler-data-10	filler2
+1	11	0	0	0	0	0	0	0	11	0	filler-data-11	filler2
+1	12	0	0	0	0	0	0	0	12	0	filler-data-12	filler2
+1	13	0	0	0	0	0	0	0	13	0	filler-data-13	filler2
+1	14	0	0	0	0	0	0	0	14	0	filler-data-14	filler2
+1	15	0	0	0	0	0	0	0	15	0	filler-data-15	filler2
+1	16	0	0	0	0	0	0	0	16	0	filler-data-16	filler2
+1	17	0	0	0	0	0	0	0	17	0	filler-data-17	filler2
+1	18	0	0	0	0	0	0	0	18	0	filler-data-18	filler2
+1	19	0	0	0	0	0	0	0	19	0	filler-data-19	filler2
+explain select pk1,pk2 from t1 where key1 = 10 and key2=10 and 2*pk1+1 < 2*96+1;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	ref	key1,key2	key1	4	const	1	Using index condition; Using where
+select pk1,pk2 from t1 where key1 = 10 and key2=10 and 2*pk1+1 < 2*96+1;
+pk1	pk2
+95	50
+95	51
+95	52
+95	53
+95	54
+95	55
+95	56
+95	57
+95	58
+95	59
+explain select * from t1 where badkey=1 and key1=10;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	ref	key1	key1	4	const	ROWS	Using where
+explain select * from t1 where pk1 < 7500 and key1 = 10;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	index_merge	PRIMARY,key1	key1,PRIMARY	8,4	NULL	ROWS	Using intersect(key1,PRIMARY); Using where
+explain select * from t1 where pktail1ok=1 and key1=10;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	ref	key1,pktail1ok	key1	4	const	1	Using where
+explain select * from t1 where pktail2ok=1 and key1=10;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	ref	key1,pktail2ok	key1	4	const	1	Using where
+explain select * from t1 where (pktail2ok=1 and pk1< 50000) or key1=10;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	index_merge	PRIMARY,key1,pktail2ok	pktail2ok,key1	8,4	NULL	ROWS	Using sort_union(pktail2ok,key1); Using where
+explain select * from t1 where pktail3bad=1 and key1=10;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	ref	key1,pktail3bad	EITHER_KEY	4	const	ROWS	Using where
+explain select * from t1 where pktail4bad=1 and key1=10;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	ref	key1,pktail4bad	key1	4	const	ROWS	Using where
+explain select * from t1 where pktail5bad=1 and key1=10;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	ref	key1,pktail5bad	key1	4	const	ROWS	Using where
+explain select pk1,pk2,key1,key2 from t1 where key1 = 10 and key2=10 limit 10;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	ref	key1,key2	key1	4	const	1	Using where
+select pk1,pk2,key1,key2 from t1 where key1 = 10 and key2=10 limit 10;
+pk1	pk2	key1	key2
+95	50	10	10
+95	51	10	10
+95	52	10	10
+95	53	10	10
+95	54	10	10
+95	55	10	10
+95	56	10	10
+95	57	10	10
+95	58	10	10
+95	59	10	10
+drop table t1;
+create table t1
+(
+RUNID varchar(22),
+SUBMITNR varchar(5),
+ORDERNR char(1),
+PROGRAMM varchar(8),
+TESTID varchar(4),
+UCCHECK char(1),
+ETEXT varchar(80),
+ETEXT_TYPE char(1),
+INFO char(1),
+SEVERITY tinyint(3),
+TADIRFLAG char(1),
+PRIMARY KEY  (RUNID,SUBMITNR,ORDERNR,PROGRAMM,TESTID,UCCHECK),
+KEY `TVERM~KEY`  (PROGRAMM,TESTID,UCCHECK)
+) DEFAULT CHARSET=latin1;
+update t1 set `ETEXT` = '', `ETEXT_TYPE`='', `INFO`='', `SEVERITY`='', `TADIRFLAG`=''
+WHERE
+`RUNID`= '' AND `SUBMITNR`= '' AND `ORDERNR`='' AND `PROGRAMM`='' AND
+`TESTID`='' AND `UCCHECK`='';
+drop table t1;
+#
+# Bug#50402 Optimizer producing wrong results when using Index Merge on InnoDB
+#
+CREATE TABLE t1 (f1 INT, PRIMARY KEY (f1));
+INSERT INTO t1 VALUES (2);
+CREATE TABLE t2 (f1 INT, f2 INT, f3 char(1),
+PRIMARY KEY (f1), KEY (f2), KEY (f3) );
+INSERT INTO t2 VALUES (1, 1, 'h'), (2, 3, 'h'), (3, 2, ''), (4, 2, '');
+SELECT t1.f1 FROM t1
+WHERE (SELECT COUNT(*) FROM t2 WHERE t2.f3 = 'h' AND t2.f2 = t1.f1) = 0 AND t1.f1 = 2;
+f1
+2
+EXPLAIN SELECT t1.f1 FROM t1
+WHERE (SELECT COUNT(*) FROM t2 WHERE t2.f3 = 'h' AND t2.f2 = t1.f1) = 0 AND t1.f1 = 2;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t1	const	PRIMARY	PRIMARY	4	const	1	Using index
+2	DEPENDENT SUBQUERY	t2	ref	f2,f3	f2	5	const	1	Using where
+DROP TABLE t1,t2;
+set global rocksdb_force_flush_memtable_now=1;
+#
+# Bug#11747423 32254: INDEX MERGE USED UNNECESSARILY
+#
+CREATE TABLE t1 (
+id INT NOT NULL PRIMARY KEY,
+id2 INT NOT NULL,
+id3 INT NOT NULL,
+KEY (id2),
+KEY (id3),
+KEY covering_index (id2,id3)
+) ENGINE=RocksDB;
+INSERT INTO t1 VALUES (0, 0, 0), (1, 1, 1), (2, 2, 2), (3, 3, 3), (4, 4, 4), (5, 5, 5), (6, 6, 6), (7, 7, 7);
+INSERT INTO t1 SELECT id + 8, id2 + 8, id3 +8 FROM t1;
+INSERT INTO t1 SELECT id + 16, 7, 0 FROM t1;
+EXPLAIN SELECT SQL_NO_CACHE count(*) FROM t1 WHERE id2=7 AND id3=0;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	ref	id2,id3,covering_index	id2	4	const	1	Using where
+DROP TABLE t1;
diff --git a/mysql-test/suite/rocksdb/t/index_merge_rocksdb.test b/mysql-test/suite/rocksdb/t/index_merge_rocksdb.test
index 12ebaa86df1f..abf8d71911b1 100644
--- a/mysql-test/suite/rocksdb/t/index_merge_rocksdb.test
+++ b/mysql-test/suite/rocksdb/t/index_merge_rocksdb.test
@@ -83,3 +83,27 @@ EXPLAIN UPDATE t1 SET filler1='to be deleted' WHERE key1=100 AND key2=100;
 UPDATE t1 SET filler1='to be deleted' WHERE key1=100 and key2=100;
 
 DROP TABLE t0, t1;
+
+# Issue624 - MyRocks executes index_merge query plan incorrectly
+create table t1 (key1 int, key2 int, key3 int, key (key1), key (key2), key(key3)) engine=rocksdb;
+insert into t1 values (1, 100, 100), (1, 200, 200), (1, 300, 300);
+--disable_query_log
+let $i = 1;
+while ($i <= 1000) {
+  let $insert = INSERT INTO t1 VALUES(1000,1000,1000);
+  inc $i;
+  eval $insert;
+}
+--enable_query_log
+analyze table t1;
+set global rocksdb_force_flush_memtable_now=1;
+
+--replace_column 9 #
+explain select * from t1 where key1 = 1;
+--replace_column 9 #
+explain select key1,key2 from t1 where key1 = 1 or key2 = 1;
+select * from t1 where key1 = 1;
+select key1,key2 from t1 where key1 = 1 or key2 = 1;
+
+drop table t1;
+
diff --git a/mysql-test/suite/rocksdb/t/index_merge_rocksdb2-master.opt b/mysql-test/suite/rocksdb/t/index_merge_rocksdb2-master.opt
new file mode 100644
index 000000000000..c07b063f07c1
--- /dev/null
+++ b/mysql-test/suite/rocksdb/t/index_merge_rocksdb2-master.opt
@@ -0,0 +1 @@
+--rocksdb_strict_collation_check=off --binlog_format=row --log-bin
diff --git a/mysql-test/suite/rocksdb/t/index_merge_rocksdb2.test b/mysql-test/suite/rocksdb/t/index_merge_rocksdb2.test
new file mode 100644
index 000000000000..a4d26cf77390
--- /dev/null
+++ b/mysql-test/suite/rocksdb/t/index_merge_rocksdb2.test
@@ -0,0 +1,70 @@
+# Skiping this test from Valgrind execution as per Bug-14627884
+--source include/not_valgrind.inc
+# Adding big test option for this test.
+--source include/big_test.inc
+
+# t/index_merge_innodb.test
+#
+# Index merge tests
+#
+# Last update:
+# 2006-08-07 ML test refactored (MySQL 5.1)
+#               Main code of several index_merge tests
+#                            -> include/index_merge*.inc
+#               wrapper t/index_merge_innodb.test sources now several 
+#               include/index_merge*.inc files
+#
+
+--source include/have_rocksdb.inc
+let $engine_type= RocksDB;
+# skipping because too unstable in MyRocks
+let $skip_ror_EXPLAIN_for_MyRocks = 1;
+let $random_rows_in_EXPLAIN = 1;
+let $sorted_result = 1;
+# According to Oracle: "InnoDB's estimate for the index cardinality
+# depends on a pseudo random number generator (it picks up random
+# pages to sample). After an optimization that was made in r2625 two
+# EXPLAINs started returning a different number of rows (3 instead of
+# 4)", so:
+let $index_merge_random_rows_in_EXPLAIN = 1;
+# RocksDB does not support Merge tables (affects include/index_merge1.inc)
+let $merge_table_support= 0;
+
+set global rocksdb_force_flush_memtable_now=1;
+--source include/index_merge1.inc
+set global rocksdb_force_flush_memtable_now=1;
+--source include/index_merge_ror.inc
+set global rocksdb_force_flush_memtable_now=1;
+--source include/index_merge2.inc
+
+set global rocksdb_force_flush_memtable_now=1;
+--source include/index_merge_2sweeps.inc
+set global rocksdb_force_flush_memtable_now=1;
+--source include/index_merge_ror_cpk.inc
+
+set global rocksdb_force_flush_memtable_now=1;
+--echo #
+--echo # Bug#11747423 32254: INDEX MERGE USED UNNECESSARILY
+--echo #
+CREATE TABLE t1 (
+  id INT NOT NULL PRIMARY KEY,
+  id2 INT NOT NULL,
+  id3 INT NOT NULL,
+  KEY (id2),
+  KEY (id3),
+  KEY covering_index (id2,id3)
+) ENGINE=RocksDB;
+
+INSERT INTO t1 VALUES (0, 0, 0), (1, 1, 1), (2, 2, 2), (3, 3, 3), (4, 4, 4), (5, 5, 5), (6, 6, 6), (7, 7, 7);
+INSERT INTO t1 SELECT id + 8, id2 + 8, id3 +8 FROM t1;
+INSERT INTO t1 SELECT id + 16, 7, 0 FROM t1;
+
+-- disable_query_log
+-- disable_result_log
+analyze table t1;
+-- enable_result_log
+-- enable_query_log
+
+EXPLAIN SELECT SQL_NO_CACHE count(*) FROM t1 WHERE id2=7 AND id3=0;
+
+DROP TABLE t1;
diff --git a/storage/rocksdb/ha_rocksdb.cc b/storage/rocksdb/ha_rocksdb.cc
index 74253ac76ed6..441a7aa2d855 100644
--- a/storage/rocksdb/ha_rocksdb.cc
+++ b/storage/rocksdb/ha_rocksdb.cc
@@ -4432,7 +4432,9 @@ void ha_rocksdb::setup_read_decoders() {
       continue;
     }
 
+    // bitmap is cleared on index merge, but it still needs to decode columns
     if (m_lock_rows == RDB_LOCK_WRITE || m_verify_row_debug_checksums ||
+        bitmap_is_clear_all(table->read_set) ||
         bitmap_is_set(table->read_set, table->field[i]->field_index)) {
       // We will need to decode this field
       m_decoders_vect.push_back({&m_encoder_arr[i], true, skip_size});