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How should SQL code be formatted? What sort of indentation should you use? Should keywords be in upper case? How should lists be lined up? SQL is one of those languages that will execute anyway however you treat whitespace and capitalization. However, the way SQL is laid out will effect its readability and the time taken to review and understand it. Standardisation of code layout is an important issue, but what standard should you adopt? Rob avoids a direct answer, but tells you the sort of answers you'll need to decide upon when creating a strategy for formatting SQL code.

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Adding new column with DEFAULT

By Thomas Franz

Comments posted to this topic are about the item 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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