Sean Burke

Sean has been working with databases for over 15 years, and has developed many custom solutions for dozens of high profile companies. While he thoroughly enjoys working with the latest and greatest SQL Server version, he still has a strange affinity for early DOS based database products like R:Base. As an intermediate VB programmer, he is an staunch advocate for understanding the fundamentals of the database platform upon which your application relies for its data.

He is currently the Director of Data Management for Hancock Information Group in Longwood, FL, and is passively pursuing MCDBA certification.

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Building a DBA Agent for Your SQL Server Estate with MCP

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Yesterday I gave a talk for MSSQLTips called “Building a DBA Agent for Your...

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Adding new column with DEFAULT

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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
 

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