SQL SERVER – UDF – User Defined Function to Extract Only Numbers From String

Following SQL User Defined Function will extract/parse numbers from the string. CREATE FUNCTION ExtractInteger(@String VARCHAR(2000)) RETURNS VARCHAR(1000) AS BEGIN DECLARE @Count INT DECLARE @IntNumbers VARCHAR(1000) SET @Count = 0 SET @IntNumbers = '' WHILE @Count <= LEN(@String) BEGIN IF SUBSTRING(@String,@Count,1) >= '0' AND SUBSTRING(@String,@Count,1) <= '9' BEGIN SET @IntNumbers =…
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We can use either CHARINDEX or PATINDEX to search in TEXT field in SQL SERVER. The CHARINDEX and PATINDEX functions return the starting position of a pattern you specify. Both functions take two arguments. With PATINDEX, you must include percent signs before and after the pattern, unless you are looking…
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SQL SERVER – @@IDENTITY vs SCOPE_IDENTITY() vs IDENT_CURRENT – Retrieve Last Inserted Identity of Record

SELECT @@IDENTITY It returns the last IDENTITY value produced on a connection, regardless of the table that produced the value, and regardless of the scope of the statement that produced the value. @@IDENTITY will return the last identity value entered into a table in your current session. While @@IDENTITY is…
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SQL SERVER – SQL Commandments – Suggestions, Tips, Tricks

Few days ago, while searching for something on web site, I came across a very good article of 25 SQL Commandments. I really enjoyed reading it. It was for Oracle, I re-wrote it for SQL Server. First 18 points are taken from original article and last 2 I added to…
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SQL SERVER – Script to Determine Which Version of SQL Server 2000-2005 is Running

To determine which version of SQL Server 2000/2005 is running, connect to SQL Server 2000/2005 by using Query Analyzer, and then run the following code: SELECT SERVERPROPERTY('productversion'), SERVERPROPERTY ('productlevel'), SERVERPROPERTY ('edition') The results are: The product version (for example, 8.00.534). The product level (for example, “RTM” or “SP2”). The edition…
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