TA貢獻(xiàn)1866條經(jīng)驗(yàn) 獲得超5個(gè)贊
創(chuàng)建此函數(shù)（sqlserver 2005+）
CREATE function [dbo].[f_split]
(
@param nvarchar(max),
@delimiter char(1)
)
returns @t table (val nvarchar(max), seq int)
as
begin
set @param += @delimiter
;with a as
(
select cast(1 as bigint) f, charindex(@delimiter, @param) t, 1 seq
union all
select t + 1, charindex(@delimiter, @param, t + 1), seq + 1
from a
where charindex(@delimiter, @param, t + 1) > 0
)
insert @t
select substring(@param, f, t - f), seq from a
option (maxrecursion 0)
return
end
使用此語句
SELECT *
FROM yourtable
WHERE account in (SELECT val FROM dbo.f_split(@account, ','))
比較我的split函數(shù)和XML split：
測試數(shù)據(jù)：
select top 100000 cast(a.number as varchar(10))+','+a.type +','+ cast(a.status as varchar(9))+','+cast(b.number as varchar(10))+','+b.type +','+ cast(b.status as varchar(9)) txt into a
from master..spt_values a cross join master..spt_values b
XML：
SELECT count(t.c.value('.', 'VARCHAR(20)'))
FROM (
SELECT top 100000 x = CAST('<t>' +
REPLACE(txt, ',', '</t><t>') + '</t>' AS XML)
from a
) a
CROSS APPLY x.nodes('/t') t(c)
Elapsed time: 1:21 seconds
f_split：
select count(*) from a cross apply clausens_base.dbo.f_split(a.txt, ',')
Elapsed time: 43 seconds
這會(huì)隨著時(shí)間的流逝而變化，但是您會(huì)明白
舉報(bào)