Re: BUG #2428: ERROR: out of memory, running INSERT SELECT statement - Mailing list pgsql-bugs

From Tom Lane
Subject Re: BUG #2428: ERROR: out of memory, running INSERT SELECT statement
Date
Msg-id 18814.1147392894@sss.pgh.pa.us
Whole thread Raw
In response to Re: BUG #2428: ERROR: out of memory, running INSERT SELECT statement  (Casey Duncan <casey@pandora.com>)
Responses Re: BUG #2428: ERROR: out of memory, running INSERT SELECT
List pgsql-bugs
Casey Duncan <casey@pandora.com> writes:
> On May 11, 2006, at 4:42 AM, Simon Riggs wrote:
>> As your database is defined, this SQL statement will return
>> approximately 4 trillion rows, by my calculation. As you say, it
>> returns no rows at all when the database is empty.

> *slaps forehead* I totally missed the "!=" in the where clause, Doh!
> Thanks for hitting me with a clue-stick.

I'm still wondering why you got "out of memory", though.  I'd have
expected that to grind for a really long time, gradually filling your
disk, until you got an out-of-disk-space kind of error; if you didn't
notice and stop it first.  There aren't (supposed to be) any long-term
memory leaks in query processing, other than than the known issue of
pending trigger events, which you say you haven't got on this table.

            regards, tom lane

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