Blog Posts

Blog Post

Disappearing Data Files

This article has just shared the power of XEvents and yet another use in helping to audit the database environment for changes. Not only do we have this powerful...

2020-07-14

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Blog Post

More ADLS Gen2 enhancements

On the heels of More Azure Blob Storage enhancements come more enhancements for Azure Data Lake Store Gen2 (ADLS Gen2): Archive tier is now GA: The archive tier provides...

2020-07-14 (first published: )

270 reads

Blog Post

sp_Blitz for All Servers

Are you a Microsoft SQL Server DBA managing one or more servers?  Then you should know about the First Responder Kit from Brent Ozar Unlimited.  This is a free...

2020-07-14

347 reads

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Adding new column with DEFAULT II

By Thomas Franz

Comments posted to this topic are about the item Adding new column with DEFAULT...

Advanced Deployment Scenarios: Stairway to Reliable Database Deployments Level 7

By Massimo Preitano

Comments posted to this topic are about the item Advanced Deployment Scenarios: Stairway to...

You Need a DBA Pipeline

By Steve Jones - SSC Editor

Comments posted to this topic are about the item You Need a DBA Pipeline

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Question of the Day

Adding new column with DEFAULT II

Which number did the two COUNT(*) return:

DROP TABLE IF EXISTS #tmp
CREATE TABLE #tmp (id INT NOT NULL)

INSERT INTO #tmp (id) 
SELECT gs.value
  FROM GENERATE_SERIES(1, 5) AS gs

ALTER TABLE #tmp ADD my_value INT NOT NULL CONSTRAINT df_tmp_my_value DEFAULT 1

SELECT COUNT(*)  FROM #tmp AS t WHERE my_value = 1

ALTER TABLE #tmp DROP CONSTRAINT df_tmp_my_value

ALTER TABLE #tmp ADD CONSTRAINT df_tmp_my_value DEFAULT 2 FOR my_value

SELECT COUNT(*)  FROM #tmp AS t WHERE my_value = 1

See possible answers