Scripts

Technical Article

Find Duplicated rows

This is a very simple and small stored procedure which will help you identify repeated rows on any given table.  This is specially useful for situations when you want to clean up a table and add a primary key on it, but you cannot until all duplication is eliminated.  Only two parameter are necessary; table […]

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2002-07-08

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Technical Article

Dynamically Alter all your Tables.....

This script allows you to dynamically alter all the tables in your database.  In the script i am building up an alter statement that adds a 'TimeStamp' column a table.If anyone knows a better way to do this kind of thing, feel free to drop me a mail (jamie.moffat@infographics.co.uk)

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2002-07-04

776 reads

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Question of the Day

Adding new column with DEFAULT

Which number will the COUNT() return after executing the following statements:

DROP TABLE IF EXISTS #test;
CREATE TABLE #test (id INT)
INSERT INTO #test (id)
SELECT *
  FROM GENERATE_SERIES(1, 3) AS gs
;

ALTER TABLE #test ADD flag BIT CONSTRAINT DF_#test_flag DEFAULT 0;
go
UPDATE #test SET flag = 0 WHERE id = 1
UPDATE #test SET flag = 1 WHERE id = 2

INSERT INTO #test (id) VALUES (4)

SELECT COUNT(*)
  FROM #test AS t
 WHERE flag = 0
 

See possible answers