| From: | Laurenz Albe <laurenz(dot)albe(at)cybertec(dot)at> |
|---|---|
| To: | a <372660931(at)qq(dot)com>, pgsql-general <pgsql-general(at)postgresql(dot)org> |
| Subject: | Re: How can I retrieve attribute category with attribute Oid in Cfunction? |
| Date: | 2018-05-14 08:51:29 |
| Message-ID: | 1526287889.2675.14.camel@cybertec.at |
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| Lists: | pgsql-general |
a wrote:
> could you provide some more detail information??
>
> What function should I use to get FormData_pg_type structure??
>
> BTW, I searched another function called "lookup_type_cache", which will return a pointer of structure of "TypeCacheEntry".
>
> The structure contains "TypeCacheEntry.typtype" that may also help to
identify the type.
>
> But I'm concerning about possible memory leak and allocation stuff. Is it safe to just declare a pointer and call this function??
In "logicalrep_write_typ" in src/backend/replication/logical/proto.c
you can find an example how to get the pg_type values from the OID.
Yours,
Laurenz Albe
--
Cybertec | https://www.cybertec-postgresql.com
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