Extract Numbers from a String using Sql Server 2005

I have seen a common requirement where we have numbers and alphabets mixed up in a column (house no in the address field) and the number has to be extracted out of the string.

Here's a query to do so:

-- This query is a Modification of the Original query by 'usenetjb'

DECLARE @NumStr varchar(1000)
SET @NumStr = 'This string contains 5 words and now 9 words';

BEGIN
WHILE PATINDEX('%[^0-9]%',@NumStr)> 0
SET @NumStr = REPLACE(@NumStr,SUBSTRING(@NumStr,PATINDEX('%[^0-9]%',@NumStr),1),'')
END

PRINT @NumStr

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About The Author

Suprotim Agarwal, ASP.NET Architecture MVP works as an Architect Consultant and provides consultancy on how to design and develop Web applications.

Suprotim is also the founder and primary contributor to DevCurry, DotNetCurry and SQLServerCurry. He has also written an EBook 51 Recipes using jQuery with ASP.NET Controls.

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