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Message Posted: Tue, 04 May 2004 @ 18:38:07 GMT
<-- Anonymously Posted: Tuesday, May 04, 2004 13:36 -->
Isn't there a dummy objectname you can specify in Teradata SQL where you must include the FROM clause even though you don't actually need to access a table?
I know in some cases you don't need the FROM clause, e.g., 'SELECT DATE;'. But for example queries with UNION will fail:
select 1 union select 0; 3888: A SELECT for a UNION,INTERSECT or MINUS must reference a table.
I could swear I heard about this 'dummy table' in a Teradata Education class a few years ago but have never had occasion to use it. I know there are alternatives to this logic, but I am seeking an answer to this specific question.
p.s. Is it documented anywhere?
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