Heikki Linnakangas <[EMAIL PROTECTED]> writes:
> Yes, please. At least DB2 allows recursive queries without the
> "RECURSIVE" keyword, just "WITH" is enough. Without a hint, anyone
> migrating from such a system will spend hours looking at the query,
> seeing nothing wrong.
Huh, interesting ... so they're violating the letter of the spec
as to WITH name scope.
Anyway, here's what we do as of last night:
regression=# with q(x) as (select 1 union all select x+1 from q where x<10)
select * from q;
ERROR: relation "q" does not exist
LINE 1: with q(x) as (select 1 union all select x+1 from q where x<1...
^
DETAIL: There is a WITH item named "q", but it cannot be referenced from this
part of the query.
HINT: Use WITH RECURSIVE, or re-order the WITH items to remove forward
references.
regards, tom lane
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