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Re: determining the locks that will be held by a query

From: Kevin Grittner
Subject: Re: determining the locks that will be held by a query
Date: ,
Msg-id: 49DF5F7A.EE98.0025.0@wicourts.gov
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In response to: determining the locks that will be held by a query  (Brian Cox)
List: pgsql-performance 
Brian Cox <> wrote:
> I know that EXPLAIN will show the query plan. I know that pg_locks
> will show the locks currently held for activity transactions. Is
> there a way to determine what locks a query will hold when it is
> executed?

Only to read the docs regarding locking, and to desk-check your query,
at least as far as I know.

Keep in mind that some statements will only obtain locks if they find
rows that are affected, which might vary from one run to the next.

-Kevin

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