Kalen Delaney

Kalen Delaney has been working with SQL Server for over 30 years, and is one of the world's most respected authorities on SQL Server and a much sought after trainer and speaker. Her book on "SQL Server Internals" is consistently cited as a must-read for aspiring SQL Server professionals.

SQLServerCentral Article

SQL Server Concurrency: Locking, Blocking and Row Versioning

Your application can have impeachable indexes and queries, but they won't help you if you can't get to your data because another application has it locked. That's why every DBA and developer must understand SQL Server concurrency and how to troubleshoot excessive blocking or deadlocking. Kalen Delaney's book is your guide.

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2013-08-26

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Question of the Day

Adding Bits I

I have a table, dbo.bittest, where I am testing an application response. This has this structure:

CREATE TABLE [dbo].[BitTest]
(
[insertdate] [datetime] NULL CONSTRAINT [DF__BitTest__insertd__300F11AC] DEFAULT (getdate()),
[a] [bit] NULL
) ON [PRIMARY]
GO
My application runs this code:
INSERT dbo.BitTest
(
    insertdate,
    a
)
VALUES
(DEFAULT, 'true')
GO

See possible answers