SQL模糊查询实践-优快云博客

本文介绍了两种SQL模糊查询的方法：一种是使用charIndex方法实现，另一种是通过字符串拼接完成。这两种方式均可根据输入的部分字段信息查找BIGuideTeacher表中匹配的数据。

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最近在学习存储过程其中用到了模糊查询, so 上传至优快云博客以作学习共享之用, 当然这是很简单的模糊查询有错误望指出3Q~

1. charIndex方法

create proc DynamicSearch
@GuideTeacherType nvarchar(300)='',
@GuideTeacherName nvarchar(500)='',
@GuideTeacherCompany nvarchar(1000)='',
@GuideTeacherJob nvarchar(1000)=''
as
begin
select * from BIGuideTeacher
where (@GuideTeacherType = '' or charIndex(@GuideTeacherType, GuideTeacherType) > 0)
and (@GuideTeacherName = '' or charIndex(@GuideTeacherName, GuideTeacherName) > 0)
and (@GuideTeacherCompany = '' or charIndex(@GuideTeacherType, GuideTeacherCompany) > 0)
and (@GuideTeacherJob = '' or charIndex(@GuideTeacherJob, GuideTeacherJob) > 0)
end

2. 一般拼接

create proc [dbo].[DynamicSearchResults]
@GuideTeacherType nvarchar(300)='',
@GuideTeacherName nvarchar(500)='',
@GuideTeacherCompany nvarchar(1000)='',
@GuideTeacherJob nvarchar(1000)=''
as
begin
     select * from BIGuideTeacher
     where (@GuideTeacherType='' or GuideTeacherType like '%'+@GuideTeacherType+'%')
     and (@GuideTeacherName='' or GuideTeacherName like '%'+@GuideTeacherName+'%')
     and (@GuideTeacherCompany='' or GuideTeacherCompany like '%'+@GuideTeacherCompany+'%')
     and (@GuideTeacherJob='' or GuideTeacherJob like '%'+@GuideTeacherJob+'%')
end