Vinoth is currently a Senior SQL Server DBA and 10 years of experience as SQL Server DBA. Started my career as a DBA in SQL 6.5/7 has worked in all subsequent SQL Server version. Vinoth has worked in some of the largest SQL server environments in the world in various domains ranging from Finance, Retail, Manufacturing, Consulting, Web etc. Vinoth has Engineering Degree in Computer Science and has certified in MCITP - Database Adminstrator in 2008/2005, MCDBA and ITIL Foundation V3.

Blog Post

Replace NOT IN with JOIN

Example of how to replace NOT IN clause with JOIN

/*NOT IN query*/
USEAdventureWorks;GOSELECTProductIDFROMProduction.ProductWHEREProductIDNOTIN(SELECTProductIDFROMProduction.WorkOrder);

/*JOIN Query*/:-
SELECTp.ProductIDFROMProduction.ProductpLEFTJOINProduction.WorkOrderwONp.ProductID=w.ProductIDWHEREw.ProductIDISNULL;

2012-08-02

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Question of the Day

Detecting Characters

I have a SQL Server 2022 English default installation on a server. I want to detect if there are any upper case characters in rows and I have this code:

SELECT CustomerNameID,
       CustomerName
 FROM dbo.CustomerName
 WHERE CustomerName = LOWER(CustomerName)
Here is the sample data I am testing with:
CustomerNameID CustomerName
1              John Smith
2              Sarah Johnson
3              MICHAEL WILLIAMS
4              JENNIFER BROWN
5              david jones
6              emily davis
7              Robert Miller
8              LISA WILSON
9              christopher moore
10             Amanda Taylor
How many rows are returned?

See possible answers