Bill Nicolich

A big fan of SQLServerCentral, I hope to add good posts for the general enjoyment of other readers at SQLServer Central. Also check my personal blog for additional comments, recommendations and such at SQLFave.blogspot.com.
  • Interests: E-commerce data. Set-based operations. Automation programming. Architecture of public interfaces and private interfaces within classes. Managing complexity. Evolutionary psychology. Classic literature. The author Joseph Conrad. The author Marianne Moore.

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Adding new column with DEFAULT II

By Thomas Franz

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Advanced Deployment Scenarios: Stairway to Reliable Database Deployments Level 7

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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