feat(tianmu): Test cases that supplement custom variables (#1703)

mysql-test/suite/tianmu/r/issue1696.result

@@ -0,0 +1,87 @@
+# Creating test database test_db_1696
+CREATE DATABASE IF NOT EXISTS test_db_1696;
+USE test_db_1696;
+CREATE DATABASE IF NOT EXISTS test_database;
+USE test_database;
+CREATE TABLE IF NOT EXISTS t1 (
+id INT NOT NULL,
+value INT NOT NULL
+) ENGINE=tianmu;
+INSERT INTO t1 VALUES (1, 1), (2, 2), (3, 3), (4, 1), (5, 2), (6, 3);
+CREATE TABLE IF NOT EXISTS t2 (
+id INT NOT NULL,
+value INT NOT NULL
+) ENGINE=tianmu;
+INSERT INTO t2 VALUES (1, 1), (2, 2), (3, 3), (4, 1), (5, 2), (6, 3);
+CREATE TABLE IF NOT EXISTS t3 (
+id INT NOT NULL,
+value INT NOT NULL
+) ENGINE=tianmu;
+INSERT INTO t3 VALUES (1, 1), (2, 2), (3, 3), (4, 1), (5, 2), (6, 3);
+SET @counter = 0;
+SELECT
+*,
+IF(@counter != 1, @counter, @counter := @counter + 1) AS counter
+FROM
+(
+SELECT
+t1.id AS id1,
+t1.value AS value1,
+t2.id AS id2,
+t2.value AS value2,
+t3.id AS id3,
+t3.value AS value3
+FROM
+t1
+JOIN t2 ON t1.value = t2.value
+JOIN t3 ON t2.value = t3.value
+) AS derived_table;
+id1	value1	id2	value2	id3	value3	counter
+1	1	1	1	1	1	0
+4	1	1	1	1	1	0
+1	1	1	1	4	1	0
+4	1	1	1	4	1	0
+2	2	2	2	2	2	0
+5	2	2	2	2	2	0
+2	2	2	2	5	2	0
+5	2	2	2	5	2	0
+3	3	3	3	3	3	0
+6	3	3	3	3	3	0
+3	3	3	3	6	3	0
+6	3	3	3	6	3	0
+1	1	4	1	1	1	0
+4	1	4	1	1	1	0
+1	1	4	1	4	1	0
+4	1	4	1	4	1	0
+2	2	5	2	2	2	0
+5	2	5	2	2	2	0
+2	2	5	2	5	2	0
+5	2	5	2	5	2	0
+3	3	6	3	3	3	0
+6	3	6	3	3	3	0
+3	3	6	3	6	3	0
+6	3	6	3	6	3	0
+DROP TABLE t1, t2, t3;
+set @rankno = 1;
+create table d(taxis_no int);
+insert into d values(1);
+insert into d values(1);
+insert into d values(1);
+SELECT IF(@rankno != d.taxis_no, @rankno := 1, @rankno := @rankno + 1)  from d;
+IF(@rankno != d.taxis_no, @rankno := 1, @rankno := @rankno + 1)
+2
+1
+2
+set @rankno = 1;
+drop table d;
+create table d(taxis_no int);
+insert into d values(1);
+insert into d values(2);
+insert into d values(3);
+SELECT IF(@rankno != d.taxis_no, @rankno := 1, @rankno := @rankno + 1)  from d;
+IF(@rankno != d.taxis_no, @rankno := 1, @rankno := @rankno + 1)
+2
+3
+4
+# Dropping test database test_db_1696
+DROP DATABASE IF EXISTS test_db_1696;

mysql-test/suite/tianmu/t/issue1696.test

@@ -52,13 +52,17 @@ FROM
   ) AS derived_table;
 DROP TABLE t1, t2, t3;
 
+set @rankno = 1;
+
 create table d(taxis_no int);
 
 insert into d values(1);
 insert into d values(1);
 insert into d values(1);
 
-SELECT IF(@rowno != d.taxis_no, @rankno := 1, @rankno := @rankno + 1)  from d;
+SELECT IF(@rankno != d.taxis_no, @rankno := 1, @rankno := @rankno + 1)  from d;
+
+set @rankno = 1;
 
 drop table d;
 create table d(taxis_no int);
@@ -67,7 +71,7 @@ insert into d values(1);
 insert into d values(2);
 insert into d values(3);
 
-SELECT IF(@rowno != d.taxis_no, @rankno := 1, @rankno := @rankno + 1)  from d;
+SELECT IF(@rankno != d.taxis_no, @rankno := 1, @rankno := @rankno + 1)  from d;
 
 --echo # Dropping test database test_db_1696
 DROP DATABASE IF EXISTS test_db_1696;