Disallow NULL parameters to stored procedures in MySQL/MariaDB -

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i can specify table columns not null, how make stored procedure or function compatible non-null arguments? adding not null after argument name doesn't work.

you need validate passed parameter values yourself. if you're using mysql 5.5 , can make use of signal.

delimiter // create procedure my_procedure (in param1 int) begin   if param1 null     signal sqlstate '45000' set message_text = 'null not allowed.';   end if;   -- whatever  end// delimiter ;

here sqlfiddle demo


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