Question

Using Regex in T-SQL with SQL Server 2005

Asked by: ironwill96

Thanks in advance for any help!

What I am trying to do is to link two tables based on an Id embedded inside of a couple of string columns in each table.

For example, in Table1 there is a field called "tbNet" that contains for example "ARCHP002 12345600001".  In Table2 there is a field called "Remarks" that may contain for example: "Document[Doc_Type], New Pages[1], Batch Prog[ABC], Id[123456]".

So I need to link the two tables based on the Id found in the Remarks column of Table2, to a matching number found inside of the tbNet column in Table1.

If I could just do this in C#.Net I could easily do what I want with some regular expressions.  The problem is that I really need to use the result of whatever I pull out of Id[######] in the LIKE'%######%' statement on the tbnet column.

Not sure if i'm explaining this clearly at all, but hopefully someone can figure out what I mean and provide some suggestions.  I know you can use RegEx with CLR and user-defined functions but that looks to be overly complex and would require enabling some other features on our SQL Server installation.

Thanks,
Nathan

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Asked On
2009-11-05 at 09:38:56ID24875274
Tags

SQL Server 2005

,

T-SQL

,

Regular Expressions

Topics

MS SQL Server

,

SQL Server 2005

Participating Experts
2
Points
500
Comments
2

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Answers

 

by: chapmandewPosted on 2009-11-05 at 09:45:34ID: 25751949

In table 1, does the number you looking for always contain 6 digits and preceeded by a _?
In table 2, does the number you're looking for always proceeded by an ID?

 

by: aneeshattingalPosted on 2009-11-05 at 10:08:39ID: 25752178

this will return the value inside the []

declare @Remarks varchar(100) = 'Document[Doc_Type], New Pages[1], Batch Prog[ABC], Id[12345678]'
select CHARINDEX('id[', @remarks),
       SUBSTRING (  @Remarks, CHARINDEX('id[', @remarks)+3,  
       CHARINDEX(']', @remarks, CHARINDEX('id[', @remarks))- ( CHARINDEX('id[', @remarks)+3 )
       )            


ur where condition will be something like

tbNet LIKE  '%' +  CHARINDEX('id[', remarks),
       SUBSTRING (  Remarks, CHARINDEX('id[', remarks)+3,  
       CHARINDEX(']', remarks, CHARINDEX('id[', remarks))- ( CHARINDEX('id[', remarks)+3 )
       )  +'%'

and remarks like '%idi%'

20120131-EE-VQP-002

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