Anthony Nocentino

Anthony Nocentino is the founder of Centino Systems. As an Enterprise Architect he works with clients to find right technology for their business, designing and deploying it, providing expertise on system performance and architecture. Creating well-designed, maintainable SQL Server and Linux based systems that enable clients to collect meaningful data that they can act upon. Anthony has a Bachelors and Masters in Computer Science and is working towards a Ph.D focusing on high performance/low latency data access algorithms on solid state disks. Anthony has a unique blend of academic and professional experience leveraged to help customers solve their hardest IT problems.

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T-SQL Tuesday #202: 100 Hours

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It’s time for T-SQL Tuesday again and this is a great prompt to start...

T-SQL Tuesday

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T-SQL Tuesday is a monthly blog party hosted by a different community member each...

Exploring DiskANN: Part 2: PQ, SSDs, caching and beam search

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How I used AI for this postChatGPT to generate images based on info specifically...

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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