本文介绍了Sql Server -- 去除非数字字符的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有一张桌子
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[TestAB](
[A] [int] IDENTITY(1,1) NOT NULL,
[B] [nvarchar](10) NULL,
CONSTRAINT [PK_TestAB] PRIMARY KEY CLUSTERED
(
[A] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]
GO
值喜欢
INSERT INTO [TestAB]([B])
VALUES('A1');
INSERT INTO [TestAB]([B])
VALUES('A2');
INSERT INTO [TestAB]([B])
VALUES('A5');
INSERT INTO [TestAB]([B])
VALUES('A4');
INSERT INTO [TestAB]([B])
VALUES('AA5');
INSERT INTO [TestAB]([B])
VALUES('A9');
INSERT INTO [TestAB]([B])
VALUES('C7');
INSERT INTO [TestAB]([B])
VALUES('D8');
INSERT INTO [TestAB]([B])
VALUES('D-9');
INSERT INTO [TestAB]([B])
VALUES('R$10');
我想去掉非数字字符并将 nvarchar 数字转换为 int，然后比较它们的位置！=
I want to strip off the non numeric characters and cast the nvarchar numbers to int and then compare where they are !=
推荐答案
Select A,B,Case when A<>B then 0 else 1 end
from
(
select
A,
Cast(
Left(SubString(B, PatIndex('%[0-9.-]%', B), 100),
PatIndex('%[^0-9.-]%', SubString(B, PatIndex('%[0-9.-]%', B), 100)+'_' )-1)
as int) as B
from TestAB
) aa
where A<>B
SQL-Fiddle
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