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Editorial Team
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Asked: 2026-06-18T00:53:22+00:00

I want to write a stored procedure like the one below allInterestingKeys = SELECT

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I want to write a stored procedure like the one below

allInterestingKeys = SELECT MyKey FROM MyTable WHERE CreatedDate < CAST('2013-01-01' AS date)
DELETE MyTable01 WHERE MyKey IN allInterestingKeys
DELETE MyTable02 WHERE MyKey IN allInterestingKeys 
...
DELETE MyTable10 WHERE MyKey IN allInterestingKeys

Ideally I want to run SELECT MyKey FROM MyTable WHERE ... only once to make the procedure more efficient and readable than

DELETE MyTable01 WHERE MyKey IN (SELECT MyKey FROM MyTable WHERE CreatedDate < CAST('2013-01-01' AS date))
DELETE MyTable02 WHERE MyKey IN (SELECT MyKey FROM MyTable WHERE CreatedDate < CAST('2013-01-01' AS date))
...
DELETE MyTable10 WHERE MyKey IN (SELECT MyKey FROM MyTable WHERE CreatedDate < CAST('2013-01-01' AS date))

What is the best way to code it? Thanks.

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1 Answer

  1. Editorial Team

    Use a temp table! SELECT INTO is the easiest, but you could also design the table ahead of time and INSERT INTO the temp table

    SELECT MyKey 
INTO #allInterestingKeys
FROM MyTable 
WHERE CreatedDate < CAST('2013-01-01' AS date)

    Then select the list from your temp table

    DELETE MyTable01 WHERE MyKey IN (SELECT MyKey FROM #allInterestingKeys)

    Or INNER JOIN to the temp table to delete

    DELETE t
FROM MyTable01 t
INNER JOIN #allInterestingKeys k
  ON t.MyKey = k.MyKey
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