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f549f495f7
Renamed the system variable optimizer_use_stat_tables to use_stat_tables. This variable now has only 3 possible values: 'never', 'complementary', 'preferably'. If the server has been launched with --use-stat-tables='complementary'|'preferably' then the statictics tables can be employed by the optimizer and by the ANALYZE command.
100 lines
3.6 KiB
Plaintext
100 lines
3.6 KiB
Plaintext
--source include/load_sysvars.inc
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#############################################################
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# Save initial value #
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#############################################################
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SET @start_global_value = @@global.use_stat_tables;
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SELECT @start_global_value;
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SET @start_session_value = @@session.use_stat_tables;
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SELECT @start_session_value;
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###############################################################
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# Display the DEFAULT value of use_stat_tables #
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###############################################################
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SET @@global.use_stat_tables = 2;
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SET @@global.use_stat_tables = DEFAULT;
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SELECT @@global.use_stat_tables;
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##################################################################################
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# Change the value of use_stat_tables to a valid value for GLOBAL Scope #
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##################################################################################
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SET @@global.use_stat_tables = 0;
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SELECT @@global.use_stat_tables;
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SET @@global.use_stat_tables = 1;
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SELECT @@global.use_stat_tables;
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SET @@global.use_stat_tables = 2;
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SELECT @@global.use_stat_tables;
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SET @@global.use_stat_tables = NEVER;
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SELECT @@global.use_stat_tables;
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SET @@global.use_stat_tables = COMPLEMENTARY;
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SELECT @@global.use_stat_tables;
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SET @@global.use_stat_tables = PREFERABLY;
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SELECT @@global.use_stat_tables;
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####################################################################################
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# Change the value of use_stat_tables to a valid value for SESSION Scope #
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####################################################################################
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SET @@session.use_stat_tables = 0;
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SELECT @@session.use_stat_tables;
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SET @@session.use_stat_tables = 1;
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SELECT @@session.use_stat_tables;
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SET @@session.use_stat_tables = 2;
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SELECT @@session.use_stat_tables;
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SET @@session.use_stat_tables = NEVER;
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SELECT @@session.use_stat_tables;
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SET @@session.use_stat_tables = PREFERABLY;
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SELECT @@session.use_stat_tables;
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SET @@session.use_stat_tables = COMPLEMENTARY;
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SELECT @@session.use_stat_tables;
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#####################################################################
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# Change the value of use_stat_tables to an invalid value #
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#####################################################################
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set sql_mode=TRADITIONAL;
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--Error ER_WRONG_VALUE_FOR_VAR
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SET @@global.use_stat_tables = 10;
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--Error ER_WRONG_VALUE_FOR_VAR
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SET @@global.use_stat_tables = -1024;
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--Error ER_WRONG_TYPE_FOR_VAR
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SET @@global.use_stat_tables = 2.4;
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--Error ER_WRONG_VALUE_FOR_VAR
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SET @@global.use_stat_tables = OFF;
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--Error ER_WRONG_VALUE_FOR_VAR
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SET @@session.use_stat_tables = 10;
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--Error ER_WRONG_VALUE_FOR_VAR
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SET @@session.use_stat_tables = -2;
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--Error ER_WRONG_TYPE_FOR_VAR
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SET @@session.use_stat_tables = 1.2;
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--Error ER_WRONG_VALUE_FOR_VAR
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SET @@session.use_stat_tables = ON;
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###############################################################################
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# Check if the value in GLOBAL & SESSION Tables matches value in variable #
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###############################################################################
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SELECT * FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES
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WHERE VARIABLE_NAME='use_stat_tables';
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SELECT * FROM INFORMATION_SCHEMA.SESSION_VARIABLES
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WHERE VARIABLE_NAME='use_stat_tables';
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####################################
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# Restore initial value #
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####################################
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SET @@global.use_stat_tables = @start_global_value;
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SELECT @@global.use_stat_tables;
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SET @@session.use_stat_tables = @start_session_value;
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SELECT @@session.use_stat_tables;
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set sql_mode='';
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######################################################
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# END OF use_stat_tables TESTS #
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###################################################### |