Koen Verbeeck

Koen Verbeeck is a Microsoft Business Intelligence consultant at AE, helping clients to get insight in their data. Koen has comprehensive knowledge of the Microsoft Data Platform and has been a Microsoft Data Platform MVP for several years. He's also a speaker at various conferences.

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Blog Post

How I passed the DP-700 Exam

I recently took and passed the DP-700 exam, which is required for the Microsoft Certified: Fabric Data Engineer Associate certification. It’s the second Fabric certification, and it focuses more...

2025-03-17 (first published: )

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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
 

See possible answers