SELECT sys.list_drop('1,2,3,4,5', '1');
sys.list_drop('1,2,3,4,5', '1')
2,3,4,5
SELECT sys.list_drop('1,2,3,4,5', '3');
sys.list_drop('1,2,3,4,5', '3')
1,2,4,5
SELECT sys.list_drop('1,2,3,4,5', '5');
sys.list_drop('1,2,3,4,5', '5')
1,2,3,4
SELECT sys.list_drop('1, 2, 3, 4, 5', '1');
sys.list_drop('1, 2, 3, 4, 5', '1')
 2, 3, 4, 5
SELECT sys.list_drop('1, 2, 3, 4, 5', '3');
sys.list_drop('1, 2, 3, 4, 5', '3')
1, 2, 4, 5
SELECT sys.list_drop('1, 2, 3, 4, 5', '5');
sys.list_drop('1, 2, 3, 4, 5', '5')
1, 2, 3, 4
SELECT sys.list_drop('1,2,3,4,5', NULL);
ERROR 02200: Function sys.list_drop: in_drop_value input variable should not be NULL
SET @sqlmode := @@sql_mode;
SELECT @@sql_mode;
@@sql_mode
STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION
SET SESSION sql_mode = sys.list_drop(@@sql_mode, 'STRICT_TRANS_TABLES');
SELECT @@sql_mode;
@@sql_mode
ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION
SET SESSION sql_mode = @sqlmode;
SET @sqlmode := NULL;