Comma-Delimited List using Coalesce

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If you ever need to build a comma delimited list out of a column in SQL you can easily do this using the COALESCE function.

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  1. DECLARE @IDlist VARCHAR(100)
  2. SELECT @IDlist = COALESCE(@IDlist + ', ', '') + CAST(id AS VARCHAR(5)) FROM tbl
  3. SELECT @IDlist

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