Loris

I am an experienced electronics writer with a passion for simplifying complex concepts. With a background in xecor, I specialize in creating user manuals, technical documentation, and articles on circuit design, IoT, and embedded systems. My goal is to deliver clear, engaging content that empowers both professionals and enthusiasts. Let’s connect to enhance communication in the ever-evolving world of electronics!

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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

By Massimo Preitano

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You Need a DBA Pipeline

By Steve Jones - SSC Editor

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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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