pgsql: Fix LATERAL references to target table of UPDATE/DELETE.

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: pgsql-committers(at)postgresql(dot)org
Subject: pgsql: Fix LATERAL references to target table of UPDATE/DELETE.
Date: 2014-01-07 20:25:40
Message-ID: E1W0dDY-0000ni-9D@gemulon.postgresql.org
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Fix LATERAL references to target table of UPDATE/DELETE.

I failed to think much about UPDATE/DELETE when implementing LATERAL :-(.
The implemented behavior ended up being that subqueries in the FROM or
USING clause (respectively) could access the update/delete target table as
though it were a lateral reference; which seems fine if they said LATERAL,
but certainly ought to draw an error if they didn't. Fix it so you get a
suitable error when you omit LATERAL. Per report from Emre Hasegeli.

Branch
------
master

Details
-------
http://git.postgresql.org/pg/commitdiff/0c051c90082da0b7e5bcaf9aabcbd4f361137cdc

Modified Files
--------------
src/backend/parser/analyze.c | 21 +++++++++++++++
src/backend/parser/parse_clause.c | 4 +++
src/backend/parser/parse_relation.c | 4 +++
src/test/regress/expected/join.out | 48 +++++++++++++++++++++++++++++++++++
src/test/regress/sql/join.sql | 18 +++++++++++++
5 files changed, 95 insertions(+)

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