Scripts

Technical Article

Truncate tables with foreign keys

Truncating tables with constraints always had been a pain, since we have to drop and recreate all the FKs. I created a script that takes care of dropping and recreating the foreign keys while truncating. Please use with caution! and always respect your Data !

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2016-12-01 (first published: )

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Technical Article

Generate add / alter script for missing / different type columns

This query generate add/alter script for missing or different columns. Execute on source database and copy resultset. Execute generated script on any database (may be all customer databases) Missing columns will be created and different types will change as source schema.

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2016-11-18 (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