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Asked: 2026-05-11T15:14:46+00:00

Why does SQL Server insist that the temp table already exists! one or the

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Why does SQL Server insist that the temp table already exists! one or the other will happen!! , so it will never be the case.

declare @checkvar  varchar(10) declare @tbl TABLE( colx varchar(10) ) set @checkvar ='a'  INSERT  INTO @tbl (colx) VALUES('a') INSERT  INTO @tbl (colx) VALUES('b') INSERT  INTO @tbl (colx) VALUES('c') INSERT  INTO @tbl (colx) VALUES('d')  IF @checkvar  is null  select colx INTO #temp1 FROM @tbl ELSE select colx INTO #temp1 FROM @tbl WHERE colx =@checkvar

error is :There is already an object named ‘#temp1’ in the database.

Is there an elegant way around this? if @checkvar is null, i want the whole table otherwise, give me just the values where @checkvar = something

EDIT: the column is a varchar, not an int.

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1 Answer

  1. Can’t you just rewrite the statement? 

    SELECT colx INTO #temp1 FROM @tbl WHERE (@checkvar IS NULL) OR (colx = @checkVar)
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