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# # 2010-01-25 - Added # --source include/have_innodb.inc SET @start_global_value = @@global.innodb_stats_persistent_sample_pages; SELECT @start_global_value; # # exists as global only # --echo Valid values are zero or above SELECT @@global.innodb_stats_persistent_sample_pages >=0; SELECT @@global.innodb_stats_persistent_sample_pages; --error ER_INCORRECT_GLOBAL_LOCAL_VAR SELECT @@session.innodb_stats_persistent_sample_pages; SHOW global variables LIKE 'innodb_stats_persistent_sample_pages'; SHOW session variables LIKE 'innodb_stats_persistent_sample_pages'; --disable_warnings SELECT * FROM information_schema.global_variables WHERE variable_name='innodb_stats_persistent_sample_pages'; SELECT * FROM information_schema.session_variables WHERE variable_name='innodb_stats_persistent_sample_pages'; --enable_warnings # # SHOW that it's writable # SET global innodb_stats_persistent_sample_pages=10; SELECT @@global.innodb_stats_persistent_sample_pages; --disable_warnings SELECT * FROM information_schema.global_variables WHERE variable_name='innodb_stats_persistent_sample_pages'; SELECT * FROM information_schema.session_variables WHERE variable_name='innodb_stats_persistent_sample_pages'; --enable_warnings --error ER_GLOBAL_VARIABLE SET session innodb_stats_persistent_sample_pages=1; # # show the default value # set global innodb_stats_persistent_sample_pages=DEFAULT; select @@global.innodb_stats_persistent_sample_pages; # # valid values # SET global innodb_stats_persistent_sample_pages=0; SELECT @@global.innodb_stats_persistent_sample_pages; SET global innodb_stats_persistent_sample_pages=10; SELECT @@global.innodb_stats_persistent_sample_pages; # # incorrect types # --error ER_WRONG_TYPE_FOR_VAR SET global innodb_stats_persistent_sample_pages=1.1; --error ER_WRONG_TYPE_FOR_VAR SET global innodb_stats_persistent_sample_pages=1e1; --error ER_WRONG_TYPE_FOR_VAR SET global innodb_stats_persistent_sample_pages="foo"; --error ER_WRONG_TYPE_FOR_VAR SET global innodb_stats_persistent_sample_pages=' '; SELECT @@global.innodb_stats_persistent_sample_pages; --error ER_WRONG_TYPE_FOR_VAR SET global innodb_stats_persistent_sample_pages=" "; SELECT @@global.innodb_stats_persistent_sample_pages; SET global innodb_stats_persistent_sample_pages=-7; SELECT @@global.innodb_stats_persistent_sample_pages; --disable_warnings SELECT * FROM information_schema.global_variables WHERE variable_name='innodb_stats_persistent_sample_pages'; --enable_warnings # # cleanup # SET @@global.innodb_stats_persistent_sample_pages = @start_global_value; SELECT @@global.innodb_stats_persistent_sample_pages;