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SELECT @@session.show_old_temporals; @@session.show_old_temporals 0 Warnings: Warning 1287 '@@show_old_temporals' is deprecated and will be removed in a future release. SHOW SESSION VARIABLES LIKE 'show_old_temporals'; Variable_name Value show_old_temporals OFF SELECT * FROM information_schema.session_variables WHERE variable_name='show_old_temporals'; VARIABLE_NAME VARIABLE_VALUE SHOW_OLD_TEMPORALS OFF #Also can be set as a global variable. SELECT @@global.show_old_temporals; @@global.show_old_temporals 0 Warnings: Warning 1287 '@@show_old_temporals' is deprecated and will be removed in a future release. SHOW GLOBAL VARIABLES LIKE 'show_old_temporals'; Variable_name Value show_old_temporals OFF SELECT * FROM information_schema.global_variables WHERE variable_name='show_old_temporals'; VARIABLE_NAME VARIABLE_VALUE SHOW_OLD_TEMPORALS OFF #Test setting the variable to various values. #Boolean values. SET SESSION show_old_temporals= ON; Warnings: Warning 1287 '@@show_old_temporals' is deprecated and will be removed in a future release. SELECT @@session.show_old_temporals; @@session.show_old_temporals 1 Warnings: Warning 1287 '@@show_old_temporals' is deprecated and will be removed in a future release. SET SESSION show_old_temporals= OFF; Warnings: Warning 1287 '@@show_old_temporals' is deprecated and will be removed in a future release. SELECT @@session.show_old_temporals; @@session.show_old_temporals 0 Warnings: Warning 1287 '@@show_old_temporals' is deprecated and will be removed in a future release. SET SESSION show_old_temporals= 1; Warnings: Warning 1287 '@@show_old_temporals' is deprecated and will be removed in a future release. SELECT @@session.show_old_temporals; @@session.show_old_temporals 1 Warnings: Warning 1287 '@@show_old_temporals' is deprecated and will be removed in a future release. SET SESSION show_old_temporals= 0; Warnings: Warning 1287 '@@show_old_temporals' is deprecated and will be removed in a future release. SELECT @@session.show_old_temporals; @@session.show_old_temporals 0 Warnings: Warning 1287 '@@show_old_temporals' is deprecated and will be removed in a future release. #Test for DEFAULT value. SET SESSION show_old_temporals= DEFAULT; Warnings: Warning 1287 '@@show_old_temporals' is deprecated and will be removed in a future release. SELECT @@session.show_old_temporals; @@session.show_old_temporals 0 Warnings: Warning 1287 '@@show_old_temporals' is deprecated and will be removed in a future release. #Test for invalid value. SET SESSION show_old_temporals= 2; ERROR 42000: Variable 'show_old_temporals' can't be set to the value of '2' #Test for setting the session variable #using different syntax. SET show_old_temporals= 1; Warnings: Warning 1287 '@@show_old_temporals' is deprecated and will be removed in a future release. #Fetches the current session value for the variable. SELECT @@show_old_temporals; @@show_old_temporals 1 Warnings: Warning 1287 '@@show_old_temporals' is deprecated and will be removed in a future release. #cleanup SET SESSION show_old_temporals= DEFAULT; Warnings: Warning 1287 '@@show_old_temporals' is deprecated and will be removed in a future release. #Test setting the global value of the variable. #Boolean values. SET GLOBAL show_old_temporals= ON; Warnings: Warning 1287 '@@show_old_temporals' is deprecated and will be removed in a future release. SELECT @@global.show_old_temporals; @@global.show_old_temporals 1 Warnings: Warning 1287 '@@show_old_temporals' is deprecated and will be removed in a future release. SET GLOBAL show_old_temporals= OFF; Warnings: Warning 1287 '@@show_old_temporals' is deprecated and will be removed in a future release. SELECT @@global.show_old_temporals; @@global.show_old_temporals 0 Warnings: Warning 1287 '@@show_old_temporals' is deprecated and will be removed in a future release. SET GLOBAL show_old_temporals= 1; Warnings: Warning 1287 '@@show_old_temporals' is deprecated and will be removed in a future release. SELECT @@global.show_old_temporals; @@global.show_old_temporals 1 Warnings: Warning 1287 '@@show_old_temporals' is deprecated and will be removed in a future release. SET GLOBAL show_old_temporals= 0; Warnings: Warning 1287 '@@show_old_temporals' is deprecated and will be removed in a future release. SELECT @@session.show_old_temporals; @@session.show_old_temporals 0 Warnings: Warning 1287 '@@show_old_temporals' is deprecated and will be removed in a future release. #Test for DEFAULT value. SET GLOBAL show_old_temporals= DEFAULT; Warnings: Warning 1287 '@@show_old_temporals' is deprecated and will be removed in a future release. SELECT @@global.show_old_temporals; @@global.show_old_temporals 0 Warnings: Warning 1287 '@@show_old_temporals' is deprecated and will be removed in a future release. #Test for invalid value. SET GLOBAL show_old_temporals= 2; ERROR 42000: Variable 'show_old_temporals' can't be set to the value of '2'