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 – Fix: Sqllib error: OLEDB Error encountered calling IDBInitialize::Initialize. hr = 0x80004005. SQLSTATE: 08001, Native Error: 17

Error received: Sqllib error: OLEDB Error encountered calling IDBInitialize::Initialize. hr = 0x80004005. SQLSTATE: 08001, Native Error: 17 Error state: 1, Severity: 16 Source: Microsoft OLE DB Provider for SQL Server Error message: [DBNETLIB]SQL Server does not exist or access denied The simple fix: Microsoft SQL Server 2005 >> Configuration Tools…
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SQL SERVER – DBCC command to RESEED Table Identity Value – Reset Table Identity

DBCC CHECKIDENT can reseed (reset) the identity value of the table. For example, YourTable has 25 rows with 25 as last identity. If we want next record to have identity as 35 we need to run following T SQL script in Query Analyzer. DBCC CHECKIDENT (yourtable, reseed, 34) If table…
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SQL SERVER – Union vs. Union All – Which is better for performance?

This article is completely re-written with better example SQL SERVER – Difference Between Union vs. Union All – Optimal Performance Comparison. I suggest all of my readers to go here for update article. UNION The UNION command is used to select related information from two tables, much like the JOIN…
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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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