MySQL 存储过程将执行但条件不起作用答案

【问题标题】：MySQL stored procedure will execute but conditions not workingMySQL 存储过程将执行但条件不起作用
【发布时间】：2014-12-31 08:11:29
【问题描述】：

MySQL 存储过程将执行，但条件不起作用。有人可以解决这个问题吗？

空值未检查or 条件。是否需要替换or？

DELIMITER $$

CREATE DEFINER=`rebar`@`%` PROCEDURE `SearchInProgress`(
ClientID bigint,
GCName varchar(250),
TeamID int,
USPMID Bigint,
JobReceivedDate datetime,
importanceID Bigint
)
begin
select * from jobdetails 
where 
    (clientid = ClientID or ClientID = "") and 
    (GCName = GCName or GCName ="") and
    (TeamID = TeamID or TeamID ="") and 
    (ReceivedDate = JobReceivedDate or JobReceivedDate = "") and
    (ImportanceID = importanceID or importanceID = "") and
    (JobID in (select jobid from JobCoordinatorDetails where USProjectManagerID = USPMID) );
end

【问题讨论】：

标签： mysql stored-procedures scope mariadb

【解决方案1】：

我觉得可能是括号

这个(clientid = ClientID or ClientID = "")可以这样写

(clientid = ClientID) OR (ClientID = "" )

这只是一个想法。我可能错了

【讨论】：

【解决方案2】：

DELIMITER $$
DROP PROCEDURE if exists SearchInProgress $$

CREATE PROCEDURE `SearchInProgress`(
    aclientID bigint,
    aGCName varchar(250),
    aTeamID int,
    aUSProjectManagerID bigint,
    aReceivedDate datetime,
    aImportanceID bigint
)
begin
select * from jobdetails 
where 
    (clientid = aclientID or aclientID = '') and 
    (GCName = aGCName or aGCName = '') and
    (TeamID = aTeamID or aTeamID = '') and 
    (ReceivedDate = aReceivedDate or aReceivedDate = '0000-00-00 00:00:00') and
    (ImportanceID = aImportanceID or aImportanceID = '') and
    (JobID in (select jobid
                from JobCoordinatorDetails
                where USProjectManagerID = aUSProjectManagerID) or aUSProjectManagerID = '')
   ;
end

参数名和列名必须不同。我已经在参数名称前添加了a。

将空的日期时间值替换为“0000-00-00 00:00:00”：https://dev.mysql.com/doc/refman/5.7/en/datetime.html

【讨论】：