mirror of
https://github.com/MariaDB/server.git
synced 2025-01-17 04:22:27 +01:00
330864fcda
update statements
Only SELECT statements report any examined rows in the slow
log. Slow UPDATE, DELETE and INSERT statements report 0 rows
examined, unless the statement has a condition including a
SELECT substatement.
This patch adds counting of examined rows for the UPDATE and
DELETE statements. An INSERT ... VALUES statement will still
not report any rows as examined.
sql/sql_class.h:
Added more docs for THD::examined_row_count.
sql/sql_delete.cc:
Add incrementing thd->examined_row_count.
sql/sql_update.cc:
Add incrementing thd->examined_row_count.
349 lines
12 KiB
Text
349 lines
12 KiB
Text
SET @old_general_log= @@global.general_log;
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SET @old_general_log_file= @@global.general_log_file;
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SET @old_slow_query_log= @@global.slow_query_log;
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SET @old_slow_query_log_file= @@global.slow_query_log_file;
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set global general_log= OFF;
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truncate table mysql.general_log;
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truncate table mysql.slow_log;
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show global variables
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where Variable_name = 'log' or Variable_name = 'log_slow_queries' or
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Variable_name = 'general_log' or Variable_name = 'slow_query_log';
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Variable_name Value
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general_log OFF
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log OFF
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log_slow_queries OFF
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slow_query_log OFF
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flush logs;
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set global general_log= ON;
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create table t1(f1 int);
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select * from mysql.general_log;
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event_time user_host thread_id server_id command_type argument
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TIMESTAMP USER_HOST # 1 Query create table t1(f1 int)
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TIMESTAMP USER_HOST # 1 Query select * from mysql.general_log
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set global general_log= OFF;
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drop table t1;
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select * from mysql.general_log;
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event_time user_host thread_id server_id command_type argument
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TIMESTAMP USER_HOST # 1 Query create table t1(f1 int)
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TIMESTAMP USER_HOST # 1 Query select * from mysql.general_log
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TIMESTAMP USER_HOST # 1 Query set global general_log= OFF
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set global general_log= ON;
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flush logs;
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show global variables
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where Variable_name = 'log' or Variable_name = 'log_slow_queries' or
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Variable_name = 'general_log' or Variable_name = 'slow_query_log';
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Variable_name Value
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general_log ON
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log ON
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log_slow_queries OFF
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slow_query_log OFF
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# Establish connection con1 (user=root)
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# Switch to connection con1
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set @long_query_time = <long_query_time>;
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set session long_query_time = @long_query_time;
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select sleep(@long_query_time + 1);
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sleep(@long_query_time + 1)
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0
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select * from mysql.slow_log where sql_text NOT LIKE '%slow_log%';
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start_time user_host query_time lock_time rows_sent rows_examined db last_insert_id insert_id server_id sql_text
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# Switch to connection default
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set global slow_query_log= ON;
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# Switch to connection con1
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set session long_query_time = @long_query_time;
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select sleep(@long_query_time + 1);
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sleep(@long_query_time + 1)
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0
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select * from mysql.slow_log where sql_text NOT LIKE '%slow_log%';
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start_time user_host query_time lock_time rows_sent rows_examined db last_insert_id insert_id server_id sql_text
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TIMESTAMP USER_HOST QUERY_TIME 00:00:00 1 0 test 0 0 1 select sleep(@long_query_time + 1)
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# Switch to connection default
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show global variables
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where Variable_name = 'log' or Variable_name = 'log_slow_queries' or
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Variable_name = 'general_log' or Variable_name = 'slow_query_log';
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Variable_name Value
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general_log ON
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log ON
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log_slow_queries ON
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slow_query_log ON
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set global general_log= ON;
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set global general_log= OFF;
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set global general_log= OFF;
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set global slow_query_log= ON;
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set global slow_query_log= OFF;
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set global slow_query_log= OFF;
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set global general_log= ON;
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truncate table mysql.general_log;
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create table t1(f1 int);
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drop table t1;
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select * from mysql.general_log;
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event_time user_host thread_id server_id command_type argument
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TIMESTAMP USER_HOST # 1 Query create table t1(f1 int)
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TIMESTAMP USER_HOST # 1 Query drop table t1
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TIMESTAMP USER_HOST # 1 Query select * from mysql.general_log
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set global general_log= OFF;
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truncate table mysql.general_log;
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select * from mysql.general_log;
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event_time user_host thread_id server_id command_type argument
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set global general_log= ON;
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show global variables
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where Variable_name = 'log' or Variable_name = 'log_slow_queries' or
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Variable_name = 'general_log' or Variable_name = 'slow_query_log';
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Variable_name Value
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general_log ON
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log ON
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log_slow_queries OFF
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slow_query_log OFF
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show variables like 'general_log_file';
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Variable_name Value
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general_log_file #
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show variables like 'slow_query_log_file';
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Variable_name Value
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slow_query_log_file #
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show variables like 'log_output';
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Variable_name Value
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log_output FILE,TABLE
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set global general_log_file='/not existing path/log.master';
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ERROR 42000: Variable 'general_log_file' can't be set to the value of '/not existing path/log.master'
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set global general_log_file='MYSQLTEST_VARDIR';
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ERROR 42000: Variable 'general_log_file' can't be set to the value of 'MYSQLTEST_VARDIR'
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set global general_log_file='';
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ERROR 42000: Variable 'general_log_file' can't be set to the value of ''
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show variables like 'general_log_file';
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Variable_name Value
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general_log_file #
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set global general_log= OFF;
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set global general_log_file='MYSQLTEST_VARDIR/tmp/log.master';
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set global general_log= ON;
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create table t1(f1 int);
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drop table t1;
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set global general_log= OFF;
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set global general_log_file=default;
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set global general_log= ON;
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create table t1(f1 int);
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drop table t1;
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show variables like 'general_log_file';
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Variable_name Value
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general_log_file #
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show variables like 'slow_query_log_file';
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Variable_name Value
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slow_query_log_file #
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set global general_log= default;
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set global slow_query_log= default;
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set global general_log_file= default;
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set global slow_query_log_file= default;
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show variables like 'general_log';
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Variable_name Value
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general_log OFF
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show variables like 'slow_query_log';
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Variable_name Value
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slow_query_log OFF
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set global general_log=ON;
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set global log_output=default;
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show variables like 'log_output';
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Variable_name Value
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log_output FILE
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set global general_log=OFF;
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set global log_output=FILE;
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truncate table mysql.general_log;
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show variables like 'log_output';
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Variable_name Value
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log_output FILE
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set global general_log=ON;
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create table t1(f1 int);
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select * from mysql.general_log;
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event_time user_host thread_id server_id command_type argument
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set global general_log=OFF;
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set global log_output="FILE,TABLE";
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show variables like 'log_output';
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Variable_name Value
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log_output FILE,TABLE
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set global general_log=ON;
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drop table t1;
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select * from mysql.general_log;
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event_time user_host thread_id server_id command_type argument
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TIMESTAMP USER_HOST # 1 Query drop table t1
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TIMESTAMP USER_HOST # 1 Query select * from mysql.general_log
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SET @@global.general_log = @old_general_log;
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SET @@global.general_log_file = @old_general_log_file;
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SET @@global.slow_query_log = @old_slow_query_log;
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SET @@global.slow_query_log_file = @old_slow_query_log_file;
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SET GLOBAL general_log = ON;
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SET GLOBAL slow_query_log = ON;
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FLUSH TABLES WITH READ LOCK;
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SET GLOBAL general_log = OFF;
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SET GLOBAL slow_query_log = OFF;
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UNLOCK TABLES;
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FLUSH TABLES WITH READ LOCK;
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SET GLOBAL general_log = ON;
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SET GLOBAL slow_query_log = ON;
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UNLOCK TABLES;
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SET GLOBAL READ_ONLY = ON;
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SET GLOBAL general_log = OFF;
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SET GLOBAL slow_query_log = OFF;
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SET GLOBAL READ_ONLY = OFF;
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SET GLOBAL READ_ONLY = ON;
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SET GLOBAL general_log = ON;
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SET GLOBAL slow_query_log = ON;
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SET GLOBAL READ_ONLY = OFF;
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SET GLOBAL general_log = @old_general_log;
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SET GLOBAL slow_query_log = @old_slow_query_log;
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SET GLOBAL general_log = ON;
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SHOW VARIABLES LIKE 'general_log';
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Variable_name Value
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general_log ON
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SHOW VARIABLES LIKE 'log';
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Variable_name Value
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log ON
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SELECT @@general_log, @@log;
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@@general_log @@log
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1 1
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SET GLOBAL log = 0;
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Warnings:
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Warning 1287 '@@log' is deprecated and will be removed in a future release. Please use '@@general_log' instead
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SHOW VARIABLES LIKE 'general_log';
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Variable_name Value
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general_log OFF
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SHOW VARIABLES LIKE 'log';
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Variable_name Value
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log OFF
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SELECT @@general_log, @@log;
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@@general_log @@log
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0 0
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SET GLOBAL general_log = 1;
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SHOW VARIABLES LIKE 'general_log';
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Variable_name Value
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general_log ON
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SHOW VARIABLES LIKE 'log';
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Variable_name Value
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log ON
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SELECT @@general_log, @@log;
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@@general_log @@log
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1 1
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SHOW VARIABLES LIKE 'slow_query_log';
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Variable_name Value
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slow_query_log OFF
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SHOW VARIABLES LIKE 'log_slow_queries';
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Variable_name Value
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log_slow_queries OFF
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SELECT @@slow_query_log, @@log_slow_queries;
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@@slow_query_log @@log_slow_queries
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0 0
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SET GLOBAL log_slow_queries = 0;
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Warnings:
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Warning 1287 '@@log_slow_queries' is deprecated and will be removed in a future release. Please use '@@slow_query_log' instead
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SHOW VARIABLES LIKE 'slow_query_log';
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Variable_name Value
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slow_query_log OFF
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SHOW VARIABLES LIKE 'log_slow_queries';
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Variable_name Value
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log_slow_queries OFF
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SELECT @@slow_query_log, @@log_slow_queries;
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@@slow_query_log @@log_slow_queries
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0 0
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SET GLOBAL slow_query_log = 1;
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SHOW VARIABLES LIKE 'slow_query_log';
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Variable_name Value
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slow_query_log ON
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SHOW VARIABLES LIKE 'log_slow_queries';
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Variable_name Value
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log_slow_queries ON
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SELECT @@slow_query_log, @@log_slow_queries;
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@@slow_query_log @@log_slow_queries
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1 1
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SET GLOBAL general_log = @old_general_log;
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SET GLOBAL slow_query_log = @old_slow_query_log;
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SET GLOBAL general_log_file= CONCAT('/not existing path/log.maste', 'r');
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ERROR 42000: Variable 'general_log_file' can't be set to the value of '/not existing path/log.master'
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SET GLOBAL general_log_file= NULL;
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ERROR 42000: Variable 'general_log_file' can't be set to the value of 'NULL'
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SET GLOBAL slow_query_log_file= CONCAT('/not existing path/log.maste', 'r');
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ERROR 42000: Variable 'slow_query_log_file' can't be set to the value of '/not existing path/log.master'
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SET GLOBAL slow_query_log_file= NULL;
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ERROR 42000: Variable 'slow_query_log_file' can't be set to the value of 'NULL'
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SET GLOBAL general_log_file= @old_general_log_file;
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SET GLOBAL slow_query_log_file= @old_slow_query_log_file;
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# --
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# -- Bug#32748: Inconsistent handling of assignments to
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# -- general_log_file/slow_query_log_file.
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# --
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SET GLOBAL general_log_file = 'bug32748.query.log';
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SET GLOBAL slow_query_log_file = 'bug32748.slow.log';
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SHOW VARIABLES LIKE '%log_file';
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Variable_name Value
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general_log_file bug32748.query.log
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slow_query_log_file bug32748.slow.log
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SET GLOBAL general_log_file = @old_general_log_file;
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SET GLOBAL slow_query_log_file = @old_slow_query_log_file;
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# -- End of Bug#32748.
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deprecated:
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SET GLOBAL log = 0;
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Warnings:
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Warning 1287 '@@log' is deprecated and will be removed in a future release. Please use '@@general_log' instead
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SET GLOBAL log_slow_queries = 0;
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Warnings:
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Warning 1287 '@@log_slow_queries' is deprecated and will be removed in a future release. Please use '@@slow_query_log' instead
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SET GLOBAL log = DEFAULT;
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Warnings:
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Warning 1287 '@@log' is deprecated and will be removed in a future release. Please use '@@general_log' instead
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SET GLOBAL log_slow_queries = DEFAULT;
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Warnings:
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Warning 1287 '@@log_slow_queries' is deprecated and will be removed in a future release. Please use '@@slow_query_log' instead
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not deprecated:
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SELECT @@global.general_log_file INTO @my_glf;
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SELECT @@global.slow_query_log_file INTO @my_sqlf;
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SET GLOBAL general_log = 0;
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SET GLOBAL slow_query_log = 0;
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SET GLOBAL general_log_file = 'WL4403_G.log';
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SET GLOBAL slow_query_log_file = 'WL4403_SQ.log';
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SET GLOBAL general_log_file = @my_glf;
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SET GLOBAL slow_query_log_file = @my_sqlf;
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SET GLOBAL general_log = DEFAULT;
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SET GLOBAL slow_query_log = DEFAULT;
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SET @@global.general_log = @old_general_log;
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SET @@global.general_log_file = @old_general_log_file;
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SET @@global.slow_query_log = @old_slow_query_log;
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SET @@global.slow_query_log_file = @old_slow_query_log_file;
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#
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# Bug #49756 Rows_examined is always 0 in the slow query log
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# for update statements
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#
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SET @old_log_output = @@global.log_output;
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SET GLOBAL log_output = "TABLE";
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SET GLOBAL slow_query_log = ON;
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SET GLOBAL long_query_time = 0.001;
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TRUNCATE TABLE mysql.slow_log;
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CREATE TABLE t1 (a INT);
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CREATE TABLE t2 (b INT, PRIMARY KEY (b));
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INSERT INTO t2 VALUES (3),(4);
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INSERT INTO t1 VALUES (1+sleep(.01)),(2);
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INSERT INTO t1 SELECT b+sleep(.01) from t2;
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UPDATE t1 SET a=a+sleep(.01) WHERE a>2;
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UPDATE t1 SET a=a+sleep(.01) ORDER BY a DESC;
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UPDATE t2 set b=b+sleep(.01) limit 1;
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UPDATE t1 SET a=a+sleep(.01) WHERE a in (SELECT b from t2);
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DELETE FROM t1 WHERE a=a+sleep(.01) ORDER BY a LIMIT 2;
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SELECT rows_examined,sql_text FROM mysql.slow_log;
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rows_examined sql_text
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0 INSERT INTO t1 VALUES (1+sleep(.01)),(2)
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2 INSERT INTO t1 SELECT b+sleep(.01) from t2
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4 UPDATE t1 SET a=a+sleep(.01) WHERE a>2
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8 UPDATE t1 SET a=a+sleep(.01) ORDER BY a DESC
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2 UPDATE t2 set b=b+sleep(.01) limit 1
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4 UPDATE t1 SET a=a+sleep(.01) WHERE a in (SELECT b from t2)
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6 DELETE FROM t1 WHERE a=a+sleep(.01) ORDER BY a LIMIT 2
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DROP TABLE t1,t2;
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TRUNCATE TABLE mysql.slow_log;
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# end of bug#49756
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End of 5.1 tests
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# Close connection con1
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SET GLOBAL long_query_time = DEFAULT;
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SET GLOBAL log_output = @old_log_output;
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SET global general_log = @old_general_log;
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SET global general_log_file = @old_general_log_file;
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SET global slow_query_log = @old_slow_query_log;
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SET global slow_query_log_file = @old_slow_query_log_file;
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