create table b (a varchar(60))insert b select 'A' insert b select 'B' insert b select 'C' insert b select 'D' insert b select 'E'declare @str nvarchar(20) set @str = 'A,B,C' set @str = replace(@str,',',''',''')exec ('select * from b where a in('''+ @str +''')')drop table b
这些你都可以试一下! --各种字符串分函数if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[f_splitSTR]') and xtype in (N'FN', N'IF', N'TF')) drop function [dbo].[f_splitSTR] GO--3.2.1 循环截取法 CREATE FUNCTION f_splitSTR( @s varchar(8000), --待分拆的字符串 @split varchar(10) --数据分隔符 )RETURNS @re TABLE(col varchar(100)) AS BEGIN DECLARE @splitlen int SET @splitlen=LEN(@split+'a')-2 WHILE CHARINDEX(@split,@s)>0 BEGIN INSERT @re VALUES(LEFT(@s,CHARINDEX(@split,@s)-1)) SET @s=STUFF(@s,1,CHARINDEX(@split,@s)+@splitlen,'') END INSERT @re VALUES(@s) RETURN END GO /*==============================================*/if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[f_splitSTR]') and xtype in (N'FN', N'IF', N'TF')) drop function [dbo].[f_splitSTR] GO--3.2.3.1 使用临时性分拆辅助表法 CREATE FUNCTION f_splitSTR( @s varchar(8000), --待分拆的字符串 @split varchar(10) --数据分隔符 )RETURNS @re TABLE(col varchar(100)) AS BEGIN --创建分拆处理的辅助表(用户定义函数中只能操作表变量) DECLARE @t TABLE(ID int IDENTITY,b bit) INSERT @t(b) SELECT TOP 8000 0 FROM syscolumns a,syscolumns b INSERT @re SELECT SUBSTRING(@s,ID,CHARINDEX(@split,@s+@split,ID)-ID) FROM @t WHERE ID<=LEN(@s+'a') AND CHARINDEX(@split,@split+@s,ID)=ID RETURN END GO/*==============================================*/if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[f_splitSTR]') and xtype in (N'FN', N'IF', N'TF')) drop function [dbo].[f_splitSTR] GOif exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[tb_splitSTR]') and objectproperty(id,N'IsUserTable')=1) drop table [dbo].[tb_splitSTR] GO--3.2.3.2 使用永久性分拆辅助表法 --字符串分拆辅助表 SELECT TOP 8000 ID=IDENTITY(int,1,1) INTO dbo.tb_splitSTR FROM syscolumns a,syscolumns b GO--字符串分拆处理函数 CREATE FUNCTION f_splitSTR( @s varchar(8000), --待分拆的字符串 @split varchar(10) --数据分隔符 )RETURNS TABLE AS RETURN( SELECT col=CAST(SUBSTRING(@s,ID,CHARINDEX(@split,@s+@split,ID)-ID) as varchar(100)) FROM tb_splitSTR WHERE ID<=LEN(@s+'a') AND CHARINDEX(@split,@split+@s,ID)=ID) GO
select * from 表 where charindex('北京',字段)>0 or charindex('上海',字段)>0 or charindex('鄣州',字段>0) or charindex('天津',字段>0)
create table b
(a varchar(60))insert b select 'A'
insert b select 'B'
insert b select 'C'
insert b select 'D'
insert b select 'E'declare @str nvarchar(20)
set @str = 'A,B,C'
set @str = replace(@str,',',''',''')exec ('select * from b where a in('''+ @str +''')')drop table b
--各种字符串分函数if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[f_splitSTR]') and xtype in (N'FN', N'IF', N'TF'))
drop function [dbo].[f_splitSTR]
GO--3.2.1 循环截取法
CREATE FUNCTION f_splitSTR(
@s varchar(8000), --待分拆的字符串
@split varchar(10) --数据分隔符
)RETURNS @re TABLE(col varchar(100))
AS
BEGIN
DECLARE @splitlen int
SET @splitlen=LEN(@split+'a')-2
WHILE CHARINDEX(@split,@s)>0
BEGIN
INSERT @re VALUES(LEFT(@s,CHARINDEX(@split,@s)-1))
SET @s=STUFF(@s,1,CHARINDEX(@split,@s)+@splitlen,'')
END
INSERT @re VALUES(@s)
RETURN
END
GO
/*==============================================*/if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[f_splitSTR]') and xtype in (N'FN', N'IF', N'TF'))
drop function [dbo].[f_splitSTR]
GO--3.2.3.1 使用临时性分拆辅助表法
CREATE FUNCTION f_splitSTR(
@s varchar(8000), --待分拆的字符串
@split varchar(10) --数据分隔符
)RETURNS @re TABLE(col varchar(100))
AS
BEGIN
--创建分拆处理的辅助表(用户定义函数中只能操作表变量)
DECLARE @t TABLE(ID int IDENTITY,b bit)
INSERT @t(b) SELECT TOP 8000 0 FROM syscolumns a,syscolumns b INSERT @re SELECT SUBSTRING(@s,ID,CHARINDEX(@split,@s+@split,ID)-ID)
FROM @t
WHERE ID<=LEN(@s+'a')
AND CHARINDEX(@split,@split+@s,ID)=ID
RETURN
END
GO/*==============================================*/if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[f_splitSTR]') and xtype in (N'FN', N'IF', N'TF'))
drop function [dbo].[f_splitSTR]
GOif exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[tb_splitSTR]') and objectproperty(id,N'IsUserTable')=1)
drop table [dbo].[tb_splitSTR]
GO--3.2.3.2 使用永久性分拆辅助表法
--字符串分拆辅助表
SELECT TOP 8000 ID=IDENTITY(int,1,1) INTO dbo.tb_splitSTR
FROM syscolumns a,syscolumns b
GO--字符串分拆处理函数
CREATE FUNCTION f_splitSTR(
@s varchar(8000), --待分拆的字符串
@split varchar(10) --数据分隔符
)RETURNS TABLE
AS
RETURN(
SELECT col=CAST(SUBSTRING(@s,ID,CHARINDEX(@split,@s+@split,ID)-ID) as varchar(100))
FROM tb_splitSTR
WHERE ID<=LEN(@s+'a')
AND CHARINDEX(@split,@split+@s,ID)=ID)
GO
select * from 表 where charindex('北京',字段)>0 or
charindex('上海',字段)>0 or charindex('鄣州',字段>0) or charindex('天津',字段>0)
下面是查询语句
查询B表A字段等于或包含北京或上海或赣州或南京或天津
怎么实现
实现
a1=北京
a2=上海
a3=赣州
a4=南京
a5=天津
后面就是查询
查询B表A字段等于或包含北京或上海或赣州或南京或天津
A为:北京,上海,赣州,南京,天津
拆分成a1=北京
a2=上海
a3=赣州
a4=南京
a5=天津