mysql存储过程《2》续 博客分类： MySQL mysql存储过程mysql游标mysql循环mysql使用whilemysql使用repeat

通过传递节假日信息基础表主键、节日开始时间，添加或修改日期信息表中所属节日、所属节日第几天信息，达到配置节假日信息功能。

在mysql存储过程《2》中使用了loop完成此配置节假日的功能，现在使用另外两种循环方式完成此功能。

一：使用while。

DROP PROCEDURE
IF EXISTS holiday;

CREATE PROCEDURE holiday (
	IN holiday INT,
	IN startTime VARCHAR (12)
)
BEGIN
	DECLARE
		C INT DEFAULT 0;

DECLARE
	dateOne VARCHAR (12);

DECLARE
	offsetValue INT DEFAULT 1;

DECLARE
	done INT DEFAULT FALSE;

DECLARE
	cu CURSOR FOR SELECT
		date
	FROM
		util_date
	WHERE
		date >= startTime
	LIMIT C;

DECLARE
	CONTINUE HANDLER FOR NOT FOUND
SET done = TRUE;

SELECT
	days INTO C
FROM
	util_holiday
WHERE
	id = holiday;

UPDATE util_date
SET holidayid = '0',
 dayoffset = '0'
WHERE
	YEAR = SUBSTRING(startTime, 1, 4)
AND holidayid = holiday;

OPEN cu;

FETCH cu INTO dateOne;


WHILE done = FALSE DO
	UPDATE util_date
SET holidayid = holiday,
 dayoffset = offsetValue
WHERE
	date = dateOne;


SET offsetValue = offsetValue + 1;

FETCH cu INTO dateOne;


END
WHILE;

CLOSE cu;


END

 二：使用repeat。

DROP PROCEDURE
IF EXISTS holiday;

CREATE PROCEDURE holiday (
	IN holiday INT,
	IN startTime VARCHAR (12)
)
BEGIN
	DECLARE
		C INT DEFAULT 0;

DECLARE
	dateOne VARCHAR (12);

DECLARE
	offsetValue INT DEFAULT 1;

DECLARE
	done INT DEFAULT FALSE;

DECLARE
	cu CURSOR FOR SELECT
		date
	FROM
		util_date
	WHERE
		date >= startTime
	LIMIT C;

DECLARE
	CONTINUE HANDLER FOR NOT FOUND
SET done = TRUE;

SELECT
	days INTO C
FROM
	util_holiday
WHERE
	id = holiday;

UPDATE util_date
SET holidayid = '0',
 dayoffset = '0'
WHERE
	YEAR = SUBSTRING(startTime, 1, 4)
AND holidayid = holiday;

OPEN cu;


REPEAT
	FETCH cu INTO dateOne;


IF done = FALSE THEN
	UPDATE util_date
SET holidayid = holiday,
 dayoffset = offsetValue
WHERE
	date = dateOne;


SET offsetValue = offsetValue + 1;


END
IF;

UNTIL done
END
REPEAT
;

CLOSE cu;


END

 mysql中的while和repeat就像是java中的while和do……while。