Re: setFetchSize

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fschmidt
Тема
Re: setFetchSize
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Msg-id
1319609361329-4938781.post@n5.nabble.com
Ответ на
Re: setFetchSize (Tom Lane)
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setFetchSize fschmidt <fschmidt@gmail.com>
Re: setFetchSize Oliver Jowett <oliver@opencloud.com>
Re: setFetchSize fschmidt <fschmidt@gmail.com>
Re: setFetchSize Tom Lane <tgl@sss.pgh.pa.us>
Re: setFetchSize fschmidt <fschmidt@gmail.com>
Re: setFetchSize John R Pierce <pierce@hogranch.com>
Re: setFetchSize Oliver Jowett <oliver@opencloud.com>
Re: setFetchSize Oliver Jowett <oliver@opencloud.com>
Re: setFetchSize Dave Cramer <pg@fastcrypt.com>
Re: setFetchSize fschmidt <fschmidt@gmail.com>
Re: setFetchSize Dave Cramer <pg@fastcrypt.com>
Re: setFetchSize fschmidt <fschmidt@gmail.com>
Re: setFetchSize John R Pierce <pierce@hogranch.com>
Re: setFetchSize Tom Lane <tgl@sss.pgh.pa.us>
Re: setFetchSize Oliver Jowett <oliver@opencloud.com>
Re: setFetchSize Oliver Jowett <oliver@opencloud.com>
Okay I see the documentation saying portals die at the end of a transaction,
here:

http://developer.postgresql.org/pgdocs/postgres/protocol-flow.html#PROTOCOL-FLOW-EXT-QUERY

But looking at the JDBC code, the main use I see of portals is for
setFetchSize().  And setFetchSize() is badly crippled in its current
implementation.  Is there any fundamental reason that portals can't be made
to survive commits, like cursors WITH HOLD?  This would result in a
reasonable implementation of setFetchSize().

For now I have given up on setFetchSize() as useless for my application, and
I use "select ... order by something-unique limit fetch-size offset
how-much-has-been-read".  This is a bad hack.  I would much rather use a
functional implementation of setFetchSize().  Is there any chance I will get
one?


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