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MDEV-6388: ANALYZE $stmt output in the slow query log
Add testcase.
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drop table if exists t1; | ||
create table t1 (a int); | ||
INSERT INTO t1 VALUES (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); | ||
select * from t1 where a<3; | ||
a | ||
0 | ||
1 | ||
2 | ||
drop table t1; | ||
# explain: id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra | ||
# explain: 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used | ||
# explain: id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra | ||
# explain: 1 INSERT t1 ALL NULL NULL NULL NULL NULL NULL 100.00 100.00 NULL | ||
# explain: id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra | ||
# explain: 1 SIMPLE t1 ALL NULL NULL NULL NULL 10 10 100.00 30.00 Using where | ||
# explain: id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra | ||
# explain: 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used |
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--slow-query-log --long-query-time=0.00001 --log-slow-verbosity=query_plan,explain |
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--disable_warnings | ||
drop table if exists t1; | ||
--enable_warnings | ||
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create table t1 (a int); | ||
INSERT INTO t1 VALUES (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); | ||
select * from t1 where a<3; | ||
drop table t1; | ||
let SLOW_LOG_FILE= `select @@slow_query_log_file`; | ||
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# select @@slow_query_log_file; | ||
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perl; | ||
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my $slow_log_file= $ENV{'SLOW_LOG_FILE'} or die "SLOW_LOG_FILE not set"; | ||
open(FILE, $slow_log_file) or die "Failed to open $slow_log_file"; | ||
while(<FILE>) { | ||
if (/explain:/) { | ||
print $_; | ||
} | ||
} | ||
close(FILE); | ||
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EOF |