vervesystems

The company was founded by an inspired team of entrepreneurs from India, having numerous years of experience in Offshore Outsourcing business of Software Development. Having perfected the model to deal with it effectively and efficiently Verve was formed. In a short span of time of our formation we have grown exponentially just by our dedication to work and clients. Verve has established expertise in areas of Offshore Dedicated Development Center (ODC), Application Development & Maintenance, Migration Re-engineering, Software as a Service (SaaS), Product Development & Support, Enterprise Solutions, Web Development, Game Development, Mobile Solutions, Multimedia Services, Search Engine Optimization and Independent Verification & Validation.

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Adding new column with DEFAULT II

By Thomas Franz

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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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