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--try
CREATE PROCEDURE [dbo].[OLTR_ExamSelectSingleByTestID] (
@TestID nvarchar(30)
)
AS
declare @value varchar(2000)
--set @value='select Single from OLTR_ExamTestPaper '
if exists(select [Single] from OLTR_ExamTestPaper where charindex(@TestID, [Single])>0)
print '包含'
else
print '不包含'
exec [dbo].[OLTR_ExamSelectSingleByTestID] 'SI08110001'
/*
标题:分解字符串并查询相关数据
作者:爱新觉罗.毓华(十八年风雨,守得冰山雪莲花开)
时间:2008-03-18
地点:广东深圳
说明:通过使用函数等方法分解字符串查询相关数据。
问题:通过分解一个带某种符号分隔的字符串在数据库中查找相关数据。
例如 @str = '1,2,3',查询下表得到记录1,4,5,6
ID TypeID
1 1,2,3,4,5,6,7,8,9,10,11,12
2 2,3
3 3,7,8,9
4 2,6
5 4,5
6 6,7
*/
-----------------------------
create table tb (ID int , TypeID varchar(30))
insert into tb values(1 , '1,2,3,4,5,6,7,8,9,10,11,12')
insert into tb values(2 , '2,3')
insert into tb values(3 , '3,7,8,9')
insert into tb values(4 , '2,6')
insert into tb values(5 , '4,5')
insert into tb values(6 , '6,7')
go
-----------------------------
--如果仅仅是一个,如@str = '1'.
declare @str as varchar(30)
set @str = '1'
select * from tb where charindex(',' + @str + ',' , ',' + TypeID + ',') > 0
select * from tb where ',' + TypeID + ',' like '%,' + @str + ',%'
/*
ID TypeID
----------- ------------------------------
1 1,2,3,4,5,6,7,8,9,10,11,12
(所影响的行数为 1 行)
*/
-----------------------------
--如果包含两个,如@str = '1,2'.
declare @str as varchar(30)
set @str = '1,2'
select * from tb where charindex(',' + left(@str , charindex(',' , @str) - 1) + ',' , ',' + typeid + ',') > 0 or
charindex(',' + substring(@str , charindex(',' , @str) + 1 , len(@str)) + ',' , ',' + typeid + ',') > 0
select * from tb where ',' + typeid + ',' like '%,' + left(@str , charindex(',' , @str) - 1) + ',%' or
',' + typeid + ',' like '%,' + substring(@str , charindex(',' , @str) + 1 , len(@str)) + ',%'
/*
ID TypeID
----------- ------------------------------
1 1,2,3,4,5,6,7,8,9,10,11,12
2 2,3
4 2,6
(所影响的行数为 3 行)
*/
-------------------------------------------
--如果包含三个或四个,用PARSENAME函数来处理.
declare @str as varchar(30)
set @str = '1,2,3,4'
select * from tb where
charindex(',' + parsename(replace(@str , ',' , '.') , 4) + ',' , ',' + typeid + ',') > 0 or
charindex(',' + parsename(replace(@str , ',' , '.') , 3) + ',' , ',' + typeid + ',') > 0 or
charindex(',' + parsename(replace(@str , ',' , '.') , 2) + ',' , ',' + typeid + ',') > 0 or
charindex(',' + parsename(replace(@str , ',' , '.') , 1) + ',' , ',' + typeid + ',') > 0
select * from tb where
',' + typeid + ',' like '%,' + parsename(replace(@str , ',' , '.') , 4) + ',%' or
',' + typeid + ',' like '%,' + parsename(replace(@str , ',' , '.') , 3) + ',%' or
',' + typeid + ',' like '%,' + parsename(replace(@str , ',' , '.') , 2) + ',%' or
',' + typeid + ',' like '%,' + parsename(replace(@str , ',' , '.') , 1) + ',%'
/*
ID TypeID
----------- ------------------------------
1 1,2,3,4,5,6,7,8,9,10,11,12
2 2,3
3 3,7,8,9
4 2,6
5 4,5
(所影响的行数为 5 行)
*/
---------------------------------------
--如果超过四个,则只能使用函数或动态SQL来分解并查询数据。
/*
名称:fn_split函数.
功能:实现字符串分隔功能的函数
*/
create function dbo.fn_split(@inputstr varchar(8000), @seprator varchar(10))
returns @temp table (a varchar(200))
as
begin
declare @i int
set @inputstr = rtrim(ltrim(@inputstr))
set @i = charindex(@seprator , @inputstr)
while @i >= 1
begin
insert @temp values(left(@inputstr , @i - 1))
set @inputstr = substring(@inputstr , @i + 1 , len(@inputstr) - @i)
set @i = charindex(@seprator , @inputstr)
end
if @inputstr <> '\'
insert @temp values(@inputstr)
return
end
go
--调用
declare @str as varchar(30)
set @str = '1,2,3,4,5'
select distinct m.* from tb m,
(select * from dbo.fn_split(@str,',')) n
where charindex(',' + n.a + ',' , ',' + m.typeid + ',') > 0
drop table tb
drop function dbo.fn_split
/*
ID TypeID
----------- ------------------------------
1 1,2,3,4,5,6,7,8,9,10,11,12
2 2,3
3 3,7,8,9
4 2,6
5 4,5
(所影响的行数为 5 行)
*/
------------------------------------------
--使用动态SQL的语句。
declare @str varchar(200)
declare @sql as varchar(1000)
set @str = '1,2,3,4,5'
set @sql = 'select ''' + replace(@str , ',' , ''' as id union all select ''')
set @sql = @sql + ''''
set @sql = 'select distinct a.* from tb a , (' + @sql + ') b where charindex(' + ''','' + b.id + ' + ''',''' + ' , ' + ''','' + a.typeid + ' + ''',''' + ') > 0 '
exec (@sql)
/*
ID TypeID
----------- ------------------------------
1 1,2,3,4,5,6,7,8,9,10,11,12
2 2,3
3 3,7,8,9
4 2,6
5 4,5
(所影响的行数为 5 行)
*/
CREATE PROCEDURE [dbo].[OLTR_ExamSelectSingleByTestID] (
@TestID nvarchar(30)
)
AS
declare @value varchar(2000)
select @value=Single from OLTR_ExamTestPaper
if (charindex(@TestID, @value)>0)
print '包含'
else
print '不包含'
exec [dbo].[OLTR_ExamSelectSingleByTestID] 'SI08110001'
charindex()
patindex()
like
if charindex(','+@a+',', ','+@value+',')>0
print '包含'
else
print '不包含'
http://blog.csdn.net/ws_hgo/archive/2008/12/10/3493153.aspx
---1字符串拆分
/*
有字符串1,23,a
要求按逗号拆分为表
1
23
a
*/
--(1)第一种方法(循环截取法)
create function FC_SlpitStr(@Str nvarchar(4000),@Split nvarchar(100))
returns @R table (Col nvarchar(100))
as
begin
declare @StrLen int
set @StrLen=len(@Str)
while charindex(@Split,@StrLen)>0
begin
insert into @R values(left(@Str,charindex(@Split,@StrLen)-1))
set @Str=stuff(@Str,1,charindex(@Split,@StrLen),'')
end
insert into @R values(@Str)
return
end
--print dbo.FC_SlpitStr('1,23,a',',')
--[database_name.]owner_name.function_name ([argument_expr][,...])
declare @a nvarchar(4000)
set @a='1,23,a'
select dbo.FC_SlpitStr(@a,',')
--(2)动态T-sql语句
declare @S varchar(100)
set @s='1,23,a'
declare @sql varchar(100)
set @sql='select col='''+replace(@S, ',' , ''' union all select ''')+''''
print(@sql)
if charindex(@a, @value)>0
print '包含'
else
print '不包含'
/*
@a varchar(10) 假设@a="a" 然后 set @value='select 字段1 from 表A'
*/
declare varchar(10)
set @a=a
set @value='select 字段1 from 表A'
if (charindex(@a,@value)>0)
begin
print '@value存在@a'
end
else
begin
print '@value不存在@a'
end
declare @a varchar(10)
set @a='a'
set @value='select 字段1 from 表A'
if charindex(@a,@value) > 0
print '@value存在@a'
if exists(select 1 from 表A where charindex(@a , 字段1) > 0)
select 字段1 , case when charindex(@a , 字段1) > 0 then '存在' else '不存在' end from 表A
if exists(select 1 from 表A where charindex(@a , 字段1) > 0)
if charindex(@a,@value) > 0
print 'a'