SQL:用查询拆分逗号分隔的字符串列表?
问题描述:
这里是我的表结构:SQL:用查询拆分逗号分隔的字符串列表?
id PaymentCond
1 ZBE1, AP1, LST2, CC1
2 VB3, CC1, ZBE1
我需要进行拆分的列PaymentCond
,并会喜欢做一个简单的SQL查询,因为我不知道如何使用功能,并会喜欢保持它的所有简单。
以下是我已经找到:
SELECT id,
Substring(PaymentConditions, 1, Charindex(',', PaymentConditions)-1) as COND_1,
Substring(PaymentConditions, Charindex(',', PaymentConditions)+1, LEN(ANGEBOT.STDTXT)) as COND_2
from Payment
WHERE id = '1'
但这只是输出
id COND_1 COND_2
1 ZBE1 AP1, LST2, CC1
是有办法的一切分裂从PaymentConditions
到COND_1
,COND_2
,COND_3
等等?
在此先感谢。
答
declare @SchoolYearList nvarchar(max)='2014,2015,2016'
declare @start int=1
declare @length int=4
create table #TempFY(SchoolYear int)
while @start<len(@SchoolYearList)
BEGIN
Insert into #TempFY
select SUBSTRING(@SchoolYearList,@start,@length)
set @[email protected]+5
END
Select SchoolYear from #TempFY
+1
如果你在这个awnser上添加注释将会很好。 –
答
first create function to split values
create function [dbo].[udf_splitstring] (@tokens varchar(max),
@delimiter varchar(5))
returns @split table (
token varchar(200) not null)
as
begin
declare @list xml
select @list = cast('<a>'
+ replace(@tokens, @delimiter, '</a><a>')
+ '</a>' as xml)
insert into @split
(token)
select ltrim(t.value('.', 'varchar(200)')) as data
from @list.nodes('/a') as x(t)
return
end
CREATE TABLE #Table1
([id] int, [PaymentCond] varchar(20))
;
INSERT INTO #Table1
([id], [PaymentCond])
VALUES
(1, 'ZBE1, AP1, LST2, CC1'),
(2, 'VB3, CC1, ZBE1')
;
select id, token FROM #Table1 as t1
CROSS APPLY [dbo].UDF_SPLITSTRING([PaymentCond],',') as t2
输出
id token
1 ZBE1
1 AP1
1 LST2
1 CC1
2 VB3
2 CC1
2 ZBE1
看看http://stackoverflow.com/questions/5928599/equivalent-of-explode-to -work-with-strings-in-mysql –
应该是...... – Chanukya
你可以使用'STRING_SPLIT' https://docs.microsoft.com/en-us/sql/t-sql/functions/string- split-transact-sql – Jodrell