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# # WL#9636: Rename tx_{read_only,isolation} variables to transaction_* # ######################################################################### # Saving initial value of transaction_isolation in a temporary variable # ######################################################################### SET @global_start_value = @@global.transaction_isolation; SELECT @global_start_value; @global_start_value REPEATABLE-READ SET @session_start_value = @@session.transaction_isolation; SELECT @session_start_value; @session_start_value REPEATABLE-READ ##################################################################### # Display the DEFAULT value of transaction_isolation # ##################################################################### SET @@global.transaction_isolation = 'READ-UNCOMMITTED'; SET @@global.transaction_isolation = DEFAULT; SELECT @@global.transaction_isolation; @@global.transaction_isolation REPEATABLE-READ SET @@session.transaction_isolation = DEFAULT; SELECT @@session.transaction_isolation; @@session.transaction_isolation REPEATABLE-READ ########################################################## # Check if NULL or empty value is accepeted # ########################################################## SET @@global.transaction_isolation = NULL; ERROR 42000: Variable 'transaction_isolation' can't be set to the value of 'NULL' SET @@global.transaction_isolation = ''; ERROR 42000: Variable 'transaction_isolation' can't be set to the value of '' SET @@session.transaction_isolation = NULL; ERROR 42000: Variable 'transaction_isolation' can't be set to the value of 'NULL' SET @@session.transaction_isolation = ''; ERROR 42000: Variable 'transaction_isolation' can't be set to the value of '' ##################################################################### # Change the value of transaction_isolation to a valid value # ##################################################################### SET @@global.transaction_isolation = 'READ-UNCOMMITTED'; SELECT @@global.transaction_isolation; @@global.transaction_isolation READ-UNCOMMITTED SET @@global.transaction_isolation = 'read-COMMITTED'; SELECT @@global.transaction_isolation; @@global.transaction_isolation READ-COMMITTED SET @@global.transaction_isolation = 'REPEATABLE-READ'; SELECT @@global.transaction_isolation; @@global.transaction_isolation REPEATABLE-READ SET @@global.transaction_isolation = 'SERIALIZable'; SELECT @@global.transaction_isolation; @@global.transaction_isolation SERIALIZABLE SET @@session.transaction_isolation = 'READ-UNCOMMITTED'; SELECT @@session.transaction_isolation; @@session.transaction_isolation READ-UNCOMMITTED SET @@session.transaction_isolation = 'READ-COMMITTED'; SELECT @@session.transaction_isolation; @@session.transaction_isolation READ-COMMITTED SET @@session.transaction_isolation = 'REPEATABLE-READ'; SELECT @@session.transaction_isolation; @@session.transaction_isolation REPEATABLE-READ SET @@session.transaction_isolation = 'serializable'; SELECT @@session.transaction_isolation; @@session.transaction_isolation SERIALIZABLE ####################################################################### # Change the value of transaction_isolation to invalid value # ####################################################################### SET @@global.transaction_isolation = -1; ERROR 42000: Variable 'transaction_isolation' can't be set to the value of '-1' SET @@global.transaction_isolation = READUNCOMMITTED; ERROR 42000: Variable 'transaction_isolation' can't be set to the value of 'READUNCOMMITTED' SET @@global.transaction_isolation = 'REPEATABLE'; ERROR 42000: Variable 'transaction_isolation' can't be set to the value of 'REPEATABLE' SET @@global.transaction_isolation = OFF; ERROR 42000: Variable 'transaction_isolation' can't be set to the value of 'OFF' SET @@global.transaction_isolation = ON; ERROR 42000: Variable 'transaction_isolation' can't be set to the value of 'ON' SET @@global.transaction_isolation = 'NON-SERIALIZABLE'; ERROR 42000: Variable 'transaction_isolation' can't be set to the value of 'NON-SERIALIZABLE' SET @@transaction_isolation = -1; ERROR 42000: Variable 'transaction_isolation' can't be set to the value of '-1' SET @@transaction_isolation = READUNCOMMITTED; ERROR 42000: Variable 'transaction_isolation' can't be set to the value of 'READUNCOMMITTED' SET @@transaction_isolation = 'REPEATABLE'; ERROR 42000: Variable 'transaction_isolation' can't be set to the value of 'REPEATABLE' SET @@transaction_isolation = 'NONE'; ERROR 42000: Variable 'transaction_isolation' can't be set to the value of 'NONE' SET @@transaction_isolation = 'ALL'; ERROR 42000: Variable 'transaction_isolation' can't be set to the value of 'ALL' ######################################################################### # Check if the value in session Table matches value in variable # ######################################################################### SELECT @@session.transaction_isolation = VARIABLE_VALUE FROM INFORMATION_SCHEMA.SESSION_VARIABLES WHERE VARIABLE_NAME='transaction_isolation'; @@session.transaction_isolation = VARIABLE_VALUE 1 ######################################################################### # Check if the value in GLOBAL Table matches value in variable # ######################################################################### SELECT @@global.transaction_isolation = VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='transaction_isolation'; @@global.transaction_isolation = VARIABLE_VALUE 1 ################################################################### # Check if numbers can be used on variable # ################################################################### SET @@global.transaction_isolation = 0; SELECT @@global.transaction_isolation; @@global.transaction_isolation READ-UNCOMMITTED SET @@global.transaction_isolation = 1; SELECT @@global.transaction_isolation; @@global.transaction_isolation READ-COMMITTED SET @@global.transaction_isolation = 2; SELECT @@global.transaction_isolation; @@global.transaction_isolation REPEATABLE-READ SET @@global.transaction_isolation = 3; SELECT @@global.transaction_isolation; @@global.transaction_isolation SERIALIZABLE SET @@global.transaction_isolation = 0.4; ERROR 42000: Incorrect argument type to variable 'transaction_isolation' ################################################################### # Check if TRUE and FALSE values can be used on variable # ################################################################### SET @@global.transaction_isolation = TRUE; SELECT @@global.transaction_isolation; @@global.transaction_isolation READ-COMMITTED SET @@global.transaction_isolation = FALSE; SELECT @@global.transaction_isolation; @@global.transaction_isolation READ-UNCOMMITTED ########################################################################## # Check if transaction_isolation can be accessed with and without @@ sign# ########################################################################## SET transaction_isolation = 'REPEATABLE-READ'; SET session.transaction_isolation = 'REPEATABLE-READ'; ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'session.transaction_isolation = 'REPEATABLE-READ'' at line 1 SET global.transaction_isolation = 'REPEATABLE-READ'; ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'global.transaction_isolation = 'REPEATABLE-READ'' at line 1 SET session transaction_isolation = 'REPEATABLE-READ'; SELECT @@transaction_isolation; @@transaction_isolation REPEATABLE-READ SET global transaction_isolation = 'REPEATABLE-READ'; SELECT @@global.transaction_isolation; @@global.transaction_isolation REPEATABLE-READ ############################## # Restore initial value # ############################## SET @@global.transaction_isolation = @global_start_value; SELECT @@global.transaction_isolation; @@global.transaction_isolation REPEATABLE-READ SET @@session.transaction_isolation = @session_start_value; SELECT @@session.transaction_isolation; @@session.transaction_isolation REPEATABLE-READ #################################################################### # END OF transaction_isolation TESTS # ####################################################################