Additional Articles


External Article

SQL Server Prefetch and Query Performance

Prefetching can make a surprising difference to SQL Server query execution times where there is a high incidence of waiting for disk i/o operations, but the benefits come at a cost. Mostly, the Query Optimizer gets it right, but occasionally there are queries that would benefit from tuning.

2012-06-14

4,026 reads

External Article

A first look at SQL Server 2012 Availability Group Wait Statistics

If you are trouble-shooting an AlwaysOn Availability Group topology, a study of the wait statistics will give a pointer to many of the causes of problems. Although several wait types are documented, there is nothing like practical experiment to familiarize yourself with new wait stats, and Joe Sack demonstrates a way of testing the sort of waits generated by an availability group under various circumstances.

2012-06-12

2,331 reads

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Vectors in SQL Server 2025

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Odd Sequences

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Everything is the right question away

By Steve Jones - SSC Editor

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Question of the Day

Odd Sequences

What values are returned from this code?

CREATE SEQUENCE NumericSequence
    AS NUMERIC(5,1)
    START WITH 1.0
    INCREMENT BY 0.1;
GO
SELECT NEXT VALUE FOR NumericSequence
GO
SELECT NEXT VALUE FOR NumericSequence
GO

See possible answers