Search Postgresql Archives

Re[2]: [GENERAL] SPI_execute_plan and vardata

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Thank you

next question - how i can call pg_notify or NOTIFY query from c function

Arsen


Пятница, 23 июня 2017, 0:33 +03:00 от Tom Lane <tgl@xxxxxxxxxxxxx>:

=?UTF-8?B?0JDRgNGB0LXQvSDQkNGA0YPRgtGO0L3Rj9C9?= <arutar@xxxxx> writes:
> Datum Values[2];

> Values[0]-is integer type 
> but Values[1] is string type so 

> Values[0] = SET_4_BYTES(227);

This is really bad practice. It might accidentally work, but the
right way to do it is more like

Values[0] = Int32GetDatum(227);

or possibly Int64GetDatum if you're thinking of bigint rather than int4.

> please assist how can i convert som char* string to Datum

You're not being too clear about which "string type" you have in mind,
but if it's text, good practice would be

Values[1] = CStringGetTextDatum(char-*-ptr);

regards, tom lane


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Postgresql Jobs]     [Postgresql Admin]     [Postgresql Performance]     [Linux Clusters]     [PHP Home]     [PHP on Windows]     [Kernel Newbies]     [PHP Classes]     [PHP Books]     [PHP Databases]     [Postgresql & PHP]     [Yosemite]

  Powered by Linux