johnsmithmeta

Hello! I’m John Smith, a passionate explorer of the virtual frontier and an avid enthusiast of metaverse VR technology. With a deep fascination for immersive digital experiences, I’m constantly on the lookout for the latest advancements that push the boundaries of reality. From crafting innovative virtual environments to diving into the latest VR trends, my journey in the metaverse is all about discovering new dimensions and expanding the possibilities of how we connect and interact in digital spaces. Let’s dive into this virtual odyssey together and explore the limitless potential of tomorrow’s technology!

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Adding new column with DEFAULT II

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Advanced Deployment Scenarios: Stairway to Reliable Database Deployments Level 7

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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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