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SET GLOBAL SLOW_QUERY_LOG=OFF;
drop table if exists t;
# Create test table
create table t(id INT PRIMARY KEY) engine=InnoDB;
# Insert two rows to test table
insert into t values(1);
insert into t values(2);
insert into t values(3);
SET GLOBAL SLOW_QUERY_LOG=ON;
SELECT sleep(2);
sleep(2)
0
set min_examined_row_limit=5;
SELECT sleep(2) union select t2.id from t as t1,t as t2;
sleep(2)
0
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SELECT sleep(2);
sleep(2)
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drop table if exists t;
cat var/mysqld.1/data/percona_slow_query_log-min_examined_row_limit.log | grep Query_time | wc -l
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