Re: Query causesExecSubPlan: NULL value error

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: "Rick Smith" <rsmith(at)artschool(dot)com>
Cc: pgsql-bugs(at)postgresql(dot)org
Subject: Re: Query causesExecSubPlan: NULL value error
Date: 2000-06-12 17:34:48
Message-ID: 1669.960831288@sss.pgh.pa.us
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"Rick Smith" <rsmith(at)artschool(dot)com> writes:
> PostgreSQL version (example: PostgreSQL-6.5.3) :PostgreSQL-6.5.3
^^^^^^^^^^^^^^^^
> ERROR: ExecSubPlan: null value returned by expression subselect

6.5 and older don't cope with sub-selects returning NULL. This is fixed
in Postgres 7.0.

regards, tom lane

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