How to Run Another Query if the first query does not Fetch results in SQL SERVER

Lets say you want to keep a back up query which should execute only when the first query does not return any results, then here's how to do so:

I have using the 'Customers' table from the Northwind database in this example

SELECT CompanyName, ContactName, ContactTitle FROM Customers

where CustomerID='XYZ'

-- Check if the first query returned results

-- If the ROWCOUNT is zero, run the other query

if @@ROWCOUNT = 0

BEGIN

SELECT CompanyName, ContactName, ContactTitle FROM Customers

where CustomerID='ALFKI'

END

About The Author

Suprotim Agarwal, MCSD, MCAD, MCDBA, MCSE, is the founder of DotNetCurry, DNC Magazine for Developers, SQLServerCurry and DevCurry. He has also authored a couple of books 51 Recipes using jQuery with ASP.NET Controls and a new one recently at The Absolutely Awesome jQuery CookBook.

Suprotim has received the prestigous Microsoft MVP award for nine times in a row now. In a professional capacity, he is the CEO of A2Z Knowledge Visuals Pvt Ltd, a digital group that represents premium web sites and digital publications comprising of Professional web, windows, mobile and cloud developers, technical managers, and architects.

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