DELIMITER $$

DROP PROCEDURE IF EXISTS `Edit_table_column` $$
CREATE DEFINER=`root`@`localhost` PROCEDURE `Edit_table_column`(in_db_nm varchar(20),in_tbl_nm varchar(20),in_colm_nm varchar(20),in_your_query varchar(200))
    DETERMINISTIC
BEGIN

DECLARE var_table_count INT;

select count(*) INTO @var_table_count from information_schema.COLUMNS where  TABLE_NAME=in_tbl_nm and TABLE_SCHEMA=in_db_nm and COLUMN_NAME=in_colm_nm;
IF (@var_table_count > 0) THEN
  SET @in_your_query = in_your_query;
  SELECT @in_your_query;
  PREPARE my_query FROM @in_your_query;
  EXECUTE my_query;

ELSE
  select "Table Not Found";
END IF;

END $$

DELIMITER ;