From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
---|---|
To: | Ishaya Bhatt <ishayabhatt(at)gmail(dot)com> |
Cc: | pgsql-hackers(at)postgresql(dot)org |
Subject: | Re: Datatyp of a column |
Date: | 2013-11-11 14:28:54 |
Message-ID: | 16935.1384180134@sss.pgh.pa.us |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-hackers |
Ishaya Bhatt <ishayabhatt(at)gmail(dot)com> writes:
> In the sorting code, I need to determine the datatype of my sort keys
> and call some code conditionally based on the datatype. Is there any way to
> determine the datatype of a column from the *backend* PostGreSQL code. is
> the datatype of the column available in the query plan? Any help on this
> would be very much appreciated.
You really need to be more specific about where you need this information.
The "sorting code" certainly knows what datatypes it's working with ---
for example, in tuplesort.c there's a TupleDesc for the tuples passing
through the sort, and the column types are available from the per-column
atttypid fields of that. But it's not clear if that's what you're talking
about.
regards, tom lane
From | Date | Subject | |
---|---|---|---|
Next Message | Colin 't Hart | 2013-11-11 14:31:40 | Re: Execute query with EXCEPT, INTERSECT as anti-join, join? |
Previous Message | Andrew Dunstan | 2013-11-11 14:28:51 | Re: pg_dump and pg_dumpall in real life |