Check the Existence of Rows in a Table

  Are there better ways to check the existence of rows in a table instead of using the code below?

DECLARE

   row_count INT;

....

BEGIN

   SELECT COUNT(*) INTO row_count FROM table WHERE condition;

   IF row_count > 0 THEN --Record exists

       -- Do sth

   ELSE

      -- Do sth else

   END IF;

   ..

END;

Thanks,

Sambath