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--source include/not_embedded.inc # Save initial value SET @saved_value= @@GLOBAL.slave_preserve_commit_order; --echo # --echo # Verify it can be queried corrected in different ways. --echo # SELECT @@GLOBAL.slave_preserve_commit_order; --disable_warnings SELECT VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME = 'slave_preserve_commit_order'; --enable_warnings SHOW GLOBAL VARIABLES LIKE 'slave_preserve_commit_order'; --echo # --echo # Verify it is not a session variable --echo # --error ER_INCORRECT_GLOBAL_LOCAL_VAR SELECT @@SESSION.slave_preserve_commit_order; --disable_warnings SELECT VARIABLE_VALUE FROM INFORMATION_SCHEMA.SESSION_VARIABLES WHERE VARIABLE_NAME = 'slave_preserve_commit_order'; --enable_warnings SHOW SESSION VARIABLES LIKE 'slave_preserve_commit_order'; --error ER_GLOBAL_VARIABLE SET SESSION slave_preserve_commit_order= TRUE; SELECT @@global.slave_preserve_commit_order; --echo # --echo # Verify it can be set correctly --echo # SET GLOBAL slave_preserve_commit_order= true; SELECT @@global.slave_preserve_commit_order; --disable_warnings SELECT VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME = 'slave_preserve_commit_order'; --enable_warnings SET GLOBAL slave_preserve_commit_order= false; SELECT @@global.slave_preserve_commit_order; SET GLOBAL slave_preserve_commit_order= TRUE; SELECT @@global.slave_preserve_commit_order; SET GLOBAL slave_preserve_commit_order= FALSE; SELECT @@global.slave_preserve_commit_order; SET GLOBAL slave_preserve_commit_order= DEFAULT; SELECT @@global.slave_preserve_commit_order; --echo # --echo # It should throw an error when encountering invalid value --echo # --error ER_WRONG_VALUE_FOR_VAR SET GLOBAL slave_preserve_commit_order= NULL; SELECT @@global.slave_preserve_commit_order; --error ER_WRONG_VALUE_FOR_VAR SET GLOBAL slave_preserve_commit_order= ''; SELECT @@global.slave_preserve_commit_order; --error ER_WRONG_VALUE_FOR_VAR SET GLOBAL slave_preserve_commit_order= 'GARBAGE'; SELECT @@global.slave_preserve_commit_order; # Restore the initial value SET GLOBAL slave_preserve_commit_order = @saved_value;