Andy Leonard

  • Interests: SQL Server, Integration Services, Managing Technical Teams, Faith, Family, Farming.

Stairway to Integration Services

Updating Rows in Incremental Loads – Level 4 of the Stairway to Integration Services

Part four of this stairway series examines the process of updating the data in an existing table in a load. MVP Andy Leonard talks about the way in which packages can handle changes in a repeatable fashion.

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2019-02-27 (first published: )

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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