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pgsql: Repair bug #2694 concerning an ARRAY[] construct whose inputs are

From: tgl(at)postgresql(dot)org (Tom Lane)
To: pgsql-committers(at)postgresql(dot)org
Subject: pgsql: Repair bug #2694 concerning an ARRAY[] construct whose inputs are
Date: 2006-11-06 18:21:58
Message-ID: 20061106182158.641FE9FB1E6@postgresql.org (view raw or flat)
Thread:
Lists: pgsql-committers
Log Message:
-----------
Repair bug #2694 concerning an ARRAY[] construct whose inputs are empty
sub-arrays.  Per discussion, if all inputs are empty arrays then result
must be an empty array too, whereas a mix of empty and nonempty arrays
should (and already did) draw an error.  In the back branches, the
construct was strict: any NULL input immediately yielded a NULL output;
so I left that behavior alone.  HEAD was simply ignoring NULL sub-arrays,
which doesn't seem very sensible.  For lack of a better idea it now
treats NULL sub-arrays the same as empty ones.

Tags:
----
REL7_4_STABLE

Modified Files:
--------------
    pgsql/src/backend/executor:
        execQual.c (r1.150.2.1 -> r1.150.2.2)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/executor/execQual.c.diff?r1=1.150.2.1&r2=1.150.2.2)

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