SQL Server Performance Tuning – Looping inside the query or calling application

By Santhosh N

This explains where to have a loop if at all required to have one to get the desired result from the database.

If you required having a loop for fetching the desired records from the database, it’s always better to have a loop inside the query rather than having a loop from the calling application (like C#, VB, or Java).

The reason is to have these two benefits:

1) Avoid the network round trip between the application and Database servers.

2) Having a complex query with temporary table to have loop inside query, the query optimizer optimizes the query better rather than calling the query in a loop from external application.

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SQL Server Performance Tuning – Looping inside the query or calling application  (1018 Views)