Mysql应用mysql存储过程简单实例

发布时间：2020-12-24 08:20:54 所属栏目：MySql教程来源：网络整理

导读：《Mysql应用mysql存储过程简单实例》要点：本文介绍了Mysql应用mysql存储过程简单实例，希望对您有用。如果有疑问，可以联系我们。导读：例一,mysql存储过程： CREATE PROCEDURE test(IN myid INT(3),IN myname VARCHAR(22),IN myage INT(3)) if myid=0

《Mysql应用mysql存储过程简单实例》要点：
本文介绍了Mysql应用mysql存储过程简单实例，希望对您有用。如果有疑问，可以联系我们。

导读：例一,mysql存储过程： CREATE PROCEDURE test(IN myid INT(3),IN myname VARCHAR(22),IN myage INT(3)) if myid=0 THEN INSE...

MYSQL数据库例一,mysql存储过程：
?

CREATE PROCEDURE test(IN myid INT(3),IN myage INT(3))?
if myid=0?
THEN?
?INSERT INTO a(name,age) VALUES(myname,myage);?
ELSE?
?UPDATE a SET a.name=myname,a.age=myage WHERE a.id=myid;?
END IF?

MYSQL数据库例二,mysql存储过程：
?

CREATE PROCEDURE getShang(IN worknum VARCHAR(10),OUT outName VARCHAR(20))?
?
BEGIN?
DECLARE ret int;?
DECLARE p1 VARCHAR(10);?
DECLARE p2 VARCHAR(10);?
?
set ret = (SELECT gt.iparentgroup?
FROM grouptbl gt,groupmembertbl gmt?
WHERE gt.igroupid = gmt.igroupid?
AND gmt.smemberid = worknum);?
?
if ret = 0?
?
THEN
?set p1=(SELECT gt.sgroupname?
?FROM grouptbl gt,groupmembertbl gmt?
?WHERE gt.igroupid = gmt.igroupid?
?AND gmt.smemberid = worknum);?
?SET outName = p1;?
?
ELSE??
?set p2 = (?
?SELECT grouptbl.sgroupname?
?FROM grouptbl WHERE grouptbl.igroupid =??
?(SELECT gt.iparentgroup?
?FROM grouptbl gt,groupmembertbl gmt?
?WHERE gt.igroupid = gmt.igroupid?
?AND gmt.smemberid = worknum)?
?);?
?SET outName = p2;?
END IF;?
?
END?

MYSQL数据库调用：
?

CALL getShang('ABC1122',@groupName);?
SELECT @groupName;?

MYSQL数据库注：例一和例二中因为已经传入了参数值如：IN myid INT(3),那么就不必重复定义如：DECLARE myid int;不然这个myid应该始终是默认值0!!!

MYSQL数据库例三,mysql存储过程：
?

CREATE PROCEDURE modAdministrativeSystem(?
IN personName VARCHAR(20),?
IN project VARCHAR(100),?
IN utilizationPercent FLOAT(3,2),?
IN sTime date,?
IN special VARCHAR(250)?
)?
?
BEGIN?
?
DECLARE pjId INT;?
DECLARE utilizationId INT;?
?
set pjId = (?
??? SELECT ppt.projectPersonId?
??? FROM projectpersontbl ppt?
??? WHERE ppt.projectId =??
??? (?
??? SELECT pt.projectId?
??? FROM projecttbl pt?
??? WHERE pt.projectName = project?
??? )?
??? AND ppt.personNumber =??
??? (?
??? SELECT p.worknum?
??? FROM person p?
??? WHERE p.name = personName?
?? )?
);?
?
set utilizationId = (?
??????? SELECT put.utilizationId?
??????? FROM personutilizationtbl put?
??????? WHERE put.projectPersonId = pjId?
??????? AND put.startTime = sTime?
);?
?
if utilizationId is null?
?
THEN?
??
INSERT INTO personutilizationtbl(projectPersonId,utilizationPercent,startTime,specialExplanation)??
VALUES(pjId,sTime,special);???
?
ELSE?
??
UPDATE personutilizationtbl SET personutilizationtbl.utilizationPercent =? utilizationPercent,?
personutilizationtbl.specialExplanation = special,personutilizationtbl.startTime = sTime?
WHERE personutilizationtbl.utilizationId = utilizationId;??
?
END IF;?
?
END?

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