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Comments on: SQL Server 2012 Partitioned Index Default Sampling Algorithm Changes https://www.sqlskills.com/blogs/joe/sql-server-2012-partitioned-index-default-sampling-algorithm-changes/ SQL Server Performance Tuning, High Availability and Disaster Recovery Blog Thu, 03 Jan 2013 04:32:17 +0000 hourly 1 https://wordpress.org/?v=6.9.4 By: Erin Stellato https://www.sqlskills.com/blogs/joe/sql-server-2012-partitioned-index-default-sampling-algorithm-changes/#comment-622 Tue, 28 Feb 2012 11:25:19 +0000 /blogs/joe/post/SQL-Server-2012-Partitioned-Index-Default-Sampling-Algorithm-Changes.aspx#comment-622 Thanks Joe! I can test, too 🙂 Will let you know!

]]> By: Joe Sack https://www.sqlskills.com/blogs/joe/sql-server-2012-partitioned-index-default-sampling-algorithm-changes/#comment-621 Mon, 27 Feb 2012 06:29:14 +0000 /blogs/joe/post/SQL-Server-2012-Partitioned-Index-Default-Sampling-Algorithm-Changes.aspx#comment-621 Hi Erin!

Good to hear from you. This new sampling happened after a creation on SQL Server 2012, correct.

For non-partitioned clustered index, I haven’t test that but I don’t think that should have changed. Only partitioning.

Regarding rebuilds – good question, and I didn’t test that (yet). 🙂

]]> By: Erin Stellato https://www.sqlskills.com/blogs/joe/sql-server-2012-partitioned-index-default-sampling-algorithm-changes/#comment-620 Mon, 27 Feb 2012 03:13:50 +0000 /blogs/joe/post/SQL-Server-2012-Partitioned-Index-Default-Sampling-Algorithm-Changes.aspx#comment-620 Hi Joe-

Quick confirmation – this was the sample after you simply CREATED the index, right? Have you seen the same behavior when you create a non-partitioned clustered index? And…if you rebuild the index, does it sample at 100%? BTW, I can test this all 🙂 Just wondered if you had already.

Thanks!

Erin

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