SQLBalls

Bradley Ball is a Sr. Azure FastTrack Customer Engineer for Microsoft, and former Data Platform MVP. During his IT career Bradley has spent 8 years working as a Defense contractor for clients such as the U.S. Army, The Executive Office of the President of the United States for the Obama Administration, and is the former Data Platform Practice Manager for Pragmatic Works Consulting, now 3Cloud. He has presented at SQL Saturdays, SSUG's, SQL Rally, DevConnections, SQLBits, SQL Live 360, and the PASS Summit. Bradley co-hosts the Tales From The Field YouTube show https://aka.ms/TftF/youtube , he can also be found blogging on https://www.SQLBalls.com

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Adding new column with DEFAULT II

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

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

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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

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