| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Ruslan A Dautkhanov <rusland(at)scn(dot)ru> |
| Cc: | pgsql-bugs(at)postgresql(dot)org |
| Subject: | Re: CONNECT BY |
| Date: | 2004-05-07 04:38:50 |
| Message-ID: | 28795.1083904730@sss.pgh.pa.us |
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| Lists: | pgsql-bugs |
Ruslan A Dautkhanov <rusland(at)scn(dot)ru> writes:
> Here's the patch ( http://gppl.terminal.ru/ ), which allow
> PostgreSQL use queries like
> connect by id = prior parent_id
Isn't this the same patch that we rejected a year or two back?
> as described in SQL standard...
AFAIK there is no such syntax in any version of the SQL standard.
The syntax that *is* there in SQL99 uses "WITH" to achieve roughly
the same results, but with much syntactic difference from Oracle.
If you'd like to submit a patch that implements spec-compatible
WITH, I can pass along some preliminary work that Andrew Overholt
did at Red Hat.
regards, tom lane
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