Follwing query in the shared object throws an error.
INSERT INTO headers (id, header_content) VALUES (1, SELECT raw_email FROM parser WHERE id = 1)
Error is
ERROR: syntax error at or near "SELECT" at character 53
Regardless the error in the shared object, why doesn't it insert the row in the table on which AFTER INSERT trigger is written?
Thanks,
~Harpreet
On 9/1/06, Martijn van Oosterhout <kleptog@xxxxxxxxx> wrote:
On Fri, Sep 01, 2006 at 02:51:59AM -0400, Harpreet Dhaliwal wrote:
> Hi,
> I've written a trigger after insert on a table (parser) and the trigger
> calls a function that dynamically loads a shared object written in C.
>
> This shared object intends to use the newly inserted row in the table on
> which trigger is written and insert values in another table, something like
> this,
<snip>
> Above line of code is not able to read the values of newly inserted code i.e
> SELECT contents FROM parser WHERE id = %d
> and throws an error.
The new values are in the "NEW" pseudo-tuple. See the trigger
documentation on how to access it. In the pl/sql and pl/pgsql languages
you just say "NEW.<fieldname>". Not sure about C though.
> Is it because its still the same transaction going on and the insert fired
> on parser talbe won't be reflected in the select query in the shared object
> which is a part of the same transaction???
I don't think its visible in the table yet for a BEFORE INSERT trigger.
AFTER INSERT maybe, but in either case, the NEW tuple has the actual
values.
Hope this helps,
--
Martijn van Oosterhout <kleptog@xxxxxxxxx> http://svana.org/kleptog/
> From each according to his ability. To each according to his ability to litigate.
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