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DevOps Devour Hour Slides

Here are the slides from my talk today at the Redgate NYC Devour Hour: Architecting Zero Downtime Deployments.pptx The Repo is here: https://github.com/way0utwest/ZeroDowntime An interesting question on feature toggles:...

2025-05-23

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Stack Overflow & AI

I won’t try to pretend otherwise, I’ve had some mixed feelings about Stack Overflow for a long time. I think the concept of the place, ask a question, get...

2025-06-04 (first published: )

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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