1SET @start_global_value = @@global.sql_select_limit; 2SELECT @start_global_value; 3@start_global_value 418446744073709551615 5select @@global.sql_select_limit; 6@@global.sql_select_limit 718446744073709551615 8select @@session.sql_select_limit; 9@@session.sql_select_limit 1018446744073709551615 11show global variables like 'sql_select_limit'; 12Variable_name Value 13sql_select_limit 18446744073709551615 14show session variables like 'sql_select_limit'; 15Variable_name Value 16sql_select_limit 18446744073709551615 17select * from information_schema.global_variables where variable_name='sql_select_limit'; 18VARIABLE_NAME VARIABLE_VALUE 19SQL_SELECT_LIMIT 18446744073709551615 20select * from information_schema.session_variables where variable_name='sql_select_limit'; 21VARIABLE_NAME VARIABLE_VALUE 22SQL_SELECT_LIMIT 18446744073709551615 23set global sql_select_limit=10; 24set session sql_select_limit=20; 25select @@global.sql_select_limit; 26@@global.sql_select_limit 2710 28select @@session.sql_select_limit; 29@@session.sql_select_limit 3020 31show global variables like 'sql_select_limit'; 32Variable_name Value 33sql_select_limit 10 34show session variables like 'sql_select_limit'; 35Variable_name Value 36sql_select_limit 20 37select * from information_schema.global_variables where variable_name='sql_select_limit'; 38VARIABLE_NAME VARIABLE_VALUE 39SQL_SELECT_LIMIT 10 40select * from information_schema.session_variables where variable_name='sql_select_limit'; 41VARIABLE_NAME VARIABLE_VALUE 42SQL_SELECT_LIMIT 20 43set global sql_select_limit=1.1; 44ERROR 42000: Incorrect argument type to variable 'sql_select_limit' 45set global sql_select_limit=1e1; 46ERROR 42000: Incorrect argument type to variable 'sql_select_limit' 47set global sql_select_limit="foo"; 48ERROR 42000: Incorrect argument type to variable 'sql_select_limit' 49SET @@global.sql_select_limit = @start_global_value; 50SELECT @@global.sql_select_limit; 51@@global.sql_select_limit 5218446744073709551615 53