| From: | Michael Paquier <michael(dot)paquier(at)gmail(dot)com> |
|---|---|
| To: | Igor Korot <ikorot01(at)gmail(dot)com> |
| Cc: | pgsql-general <pgsql-general(at)postgresql(dot)org> |
| Subject: | Re: Retrieving query results |
| Date: | 2017-08-23 00:32:54 |
| Message-ID: | CAB7nPqTzPvrwDakXjogGCLZGfMpQO1AMWY3e3RMp7SsDGvdUSw@mail.gmail.com |
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| Lists: | pgsql-general |
On Wed, Aug 23, 2017 at 3:19 AM, Igor Korot <ikorot01(at)gmail(dot)com> wrote:
> [quote]
> PQntuples
>
> Returns the number of rows (tuples) in the query result. Because it
> returns an integer result, large result sets might overflow the return
> value on 32-bit operating systems.
>
> int PQntuples(const PGresult *res);
> [/quote]
>
> Is there another way to not to overflow the result?
Not really with the existing API. Note that getting at 2 billion rows
is really a lot, and would cause performance issues on the application
side because a bunch of data would need to be processed, and getting
out this much data is not network-wise anyway.
--
Michael
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