Re: [GENERAL] Retrieving query results - Mailing list pgsql-general

From Michael Paquier
Subject Re: [GENERAL] Retrieving query results
Date
Msg-id CAB7nPqTzPvrwDakXjogGCLZGfMpQO1AMWY3e3RMp7SsDGvdUSw@mail.gmail.com
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In response to [GENERAL] Retrieving query results  (Igor Korot <ikorot01@gmail.com>)
List pgsql-general
On Wed, Aug 23, 2017 at 3:19 AM, Igor Korot <ikorot01@gmail.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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