CREATE TABLE IF NOT EXISTS `mem_cardtype_resource` (

  ...

) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;

DROP PROCEDURE IF EXISTS Pro_Temp_ColumnWork;

DELIMITER$$

-- 1表示新增列,2表示修改列类型,3表示删除列

CREATE PROCEDURE Pro_Temp_ColumnWork(TableName VARCHAR(50),ColumnName VARCHAR(50),SqlStr VARCHAR(4000),CType INT)

BEGIN

DECLARE Rows1 INT;

SET Rows1=0;

SELECT COUNT(*) INTO Rows1  FROM INFORMATION_SCHEMA.Columns

WHERE table_schema= DATABASE() AND table_name=TableName AND column_name=ColumnName;

-- 新增列

IF (CType=1 AND Rows1<=0) THEN

SET SqlStr := CONCAT( 'ALTER TABLE ',TableName,' ADD COLUMN ',ColumnName,' ',SqlStr);

-- 修改列类型

ELSEIF (CType=2 AND Rows1>0)  THEN

SET SqlStr := CONCAT('ALTER TABLE ',TableName,' MODIFY  ',ColumnName,' ',SqlStr);

-- 删除列

ELSEIF (CType=3 AND Rows1>0) THEN

SET SqlStr := CONCAT('ALTER TABLE  ',TableName,' DROP COLUMN  ',ColumnName);

ELSE  SET SqlStr :='';

END IF;

-- 执行命令

IF (SqlStr<>'') THEN

SET @SQL1 = SqlStr;

PREPARE stmt1 FROM @SQL1;

EXECUTE stmt1;

END IF;

END$$

DELIMITER ;

-- 当前数据库 TableName表名 ColumnName列名

-- 新增列

-- CALL Pro_Temp_ColumnWork ('表名','字段名','字段参数 ', 1);

-- CALL Pro_Temp_ColumnWork ('表名','字段名','int(11) NULL DEFAULT NULL AFTER `xxxxxxxxxxx`; ', 1);

-- 删除列

-- CALL Pro_Temp_ColumnWork ('e_handcard_control','EntranceType','', 3);

-- 最后再执行一遍删除存储过程

DROP PROCEDURE IF EXISTS Pro_Temp_ColumnWork;