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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2021-07-09 11:02:26 -0400 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2021-07-09 11:02:26 -0400 |
| commit | 39b6e85f135f7a1dcf43c0551d7d10e8c57b7fce (patch) | |
| tree | 148e10f54310282dd8ffc389a15f6133a9ebb9bf /src/backend/utils/adt/numeric.c | |
| parent | 8d48a3436dd83f7d6e3cde2d76f91f49f27ba16d (diff) | |
| download | postgresql-39b6e85f135f7a1dcf43c0551d7d10e8c57b7fce.tar.gz postgresql-39b6e85f135f7a1dcf43c0551d7d10e8c57b7fce.zip | |
Reject cases where a query in WITH rewrites to just NOTIFY.
Since the executor can't cope with a utility statement appearing
as a node of a plan tree, we can't support cases where a rewrite
rule inserts a NOTIFY into an INSERT/UPDATE/DELETE command appearing
in a WITH clause of a larger query. (One can imagine ways around
that, but it'd be a new feature not a bug fix, and so far there's
been no demand for it.) RewriteQuery checked for this, but it
missed the case where the DML command rewrites to *only* a NOTIFY.
That'd lead to crashes later on in planning. Add the missed check,
and improve the level of testing of this area.
Per bug #17094 from Yaoguang Chen. It's been busted since WITH
was introduced, so back-patch to all supported branches.
Discussion: https://postgr.es/m/17094-bf15dff55eaf2e28@postgresql.org
Diffstat (limited to 'src/backend/utils/adt/numeric.c')
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