In SQL Server, for insert into select statements, when the target for insert into is temporary table, the select statement can execute in parallel. When the target is table variable, SQL Server will not execute the select statement in parallel, which can lead to poor performance.

The below video demonstrates this with hands-on example. SQLTest Tool simulates the hands-on labs for you, no registration necessary. You can practice the online hands-on example while watching the video.

Check out www.sqlvideo.com for additional hands-on videos.

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