Edit File: max_join_size_basic.result
SET @start_global_value = @@global.max_join_size; SELECT @start_global_value; @start_global_value 18446744073709551615 select @@global.max_join_size; @@global.max_join_size 18446744073709551615 select @@session.max_join_size; @@session.max_join_size 18446744073709551615 show global variables like 'max_join_size'; Variable_name Value max_join_size 18446744073709551615 show session variables like 'max_join_size'; Variable_name Value max_join_size 18446744073709551615 select * from information_schema.global_variables where variable_name='max_join_size'; VARIABLE_NAME VARIABLE_VALUE MAX_JOIN_SIZE 18446744073709551615 select * from information_schema.session_variables where variable_name='max_join_size'; VARIABLE_NAME VARIABLE_VALUE MAX_JOIN_SIZE 18446744073709551615 set global max_join_size=10; set session max_join_size=20; select @@global.max_join_size; @@global.max_join_size 10 select @@session.max_join_size; @@session.max_join_size 20 show global variables like 'max_join_size'; Variable_name Value max_join_size 10 show session variables like 'max_join_size'; Variable_name Value max_join_size 20 select * from information_schema.global_variables where variable_name='max_join_size'; VARIABLE_NAME VARIABLE_VALUE MAX_JOIN_SIZE 10 select * from information_schema.session_variables where variable_name='max_join_size'; VARIABLE_NAME VARIABLE_VALUE MAX_JOIN_SIZE 20 set global max_join_size=1.1; ERROR 42000: Incorrect argument type to variable 'max_join_size' set global max_join_size=1e1; ERROR 42000: Incorrect argument type to variable 'max_join_size' set global max_join_size="foo"; ERROR 42000: Incorrect argument type to variable 'max_join_size' select @@sql_big_selects; @@sql_big_selects 0 set max_join_size=cast(-1 as unsigned int); select @@sql_big_selects; @@sql_big_selects 1 set max_join_size=100; select @@sql_big_selects; @@sql_big_selects 0 SET @@global.max_join_size = @start_global_value; SELECT @@global.max_join_size; @@global.max_join_size 18446744073709551615