SQL如何更新一个字段中的某一个值,如字段A的值为(G002,345,20),如何值更新G002的数值表中有个字段A ,A的值都是(G002,350,20),(G003,250,46)这种形式的,没有括号。。如何批量更新掉
A
G002,350,20
G002,340,32G005,343,54
G005,343,22G006,433,55
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如何之只更新前面的G002,G005,G006的数据SQL
A
G002,350,20
G002,340,32G005,343,54
G005,343,22G006,433,55
'
'
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如何之只更新前面的G002,G005,G006的数据SQL
-- Author :DBA_Huangzj(發糞塗牆)
-- Date :2013-05-27 20:30:10
-- Version:
-- Microsoft SQL Server 2008 R2 (SP1) - 10.50.2500.0 (Intel X86)
-- Jun 17 2011 00:57:23
-- Copyright (c) Microsoft Corporation
-- Enterprise Edition on Windows NT 6.1 <X86> (Build 7601: Service Pack 1)
--
----------------------------------------------------------------
--> 测试数据:[huang]
if object_id('[huang]') is not null drop table [huang]
go
create table [huang]([A] varchar(11))
insert [huang]
select 'G002,350,20' union all
select 'G002,340,32' union all
select 'G005,343,54' union all
select 'G005,343,22' union all
select 'G006,433,55'
--------------开始查询--------------------------select SUBSTRING(a,1,PATINDEX('%,%',a)-1) [新值]
from [huang]
----------------结果----------------------------
/*
新值
-----------
G002
G002
G005
G005
G006
*/