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 ')' at line 1
create table t1 (a int,,b int);
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 'b int)' at line 1
create table t1 (,b int);
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 'b int)' at line 1