Re: Out of memory running 560 MB query

Sorry, I was running the query on what appeared to be a cached copy of the old table—or something.

After a reboot, everything seems to be working. The admin client wasn’t responding but now all of my data is there.

With regard to the list, I wasn’t sure whether there was a .conf setting that limited the size of queries or whether there was a query size limit.

—Morgan

From: Rosser Schwarz [mailto:rosser(dot)schwarz(at)gmail(dot)com]
Sent: Sunday, September 14, 2014 5:28 PM
To: Morgan Ramsay
Cc: PgSQL ADMIN
Subject: Re: [ADMIN] Out of memory running 560 MB query

On Sun, Sep 14, 2014 at 5:18 PM, Morgan Ramsay <morgan(dot)ramsay(at)gmail(dot)com> wrote:

Any idea how to successfully run a query that large? What’s the size limit of a query?

Without seeing your actual query (or a syntactically similar one, if there are private details you can't disclose), it's difficult to say. In general, though, a couple of thoughts come to mind:

Can you run it as a single COPY statement, instead of however many individual INSERTS? Failing that, can you use the multi-row VALUES syntax for your INSERT?

As an aside, this type of question is probably more suited for the pgsql-sql list, rather than -admin.

rls

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:wq