SQL SELECT results INTO temp table using query string

Question

I am trying to write some dynamic SQL queries that select results into a temp table with a query string. It looks like follows:

DECLARE @SQL Varchar(4000)

SET @SQL = 'SELECT * INTO #tmp_tab FROM dbo.sometable'

EXEC(@SQL)

It doesn't give any error to run the code, but when I want to select from #tmp_tab , it says the table doesn't exist.

So I am wondering if there is any special syntax for it, or dynamic SQL doesn't support such operation?

Many thanks.

Answer 1

Maybe it has something to do with access. If you create a global temp table, it will work.

DECLARE @SQL Varchar(4000)
SET @SQL = 'SELECT * INTO ##tmp_tab FROM dbo.batch'
EXEC(@SQL)

SELECT * FROM ##tmp_tab