| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | "tsunakawa(dot)takay(at)fujitsu(dot)com" <tsunakawa(dot)takay(at)fujitsu(dot)com> |
| Cc: | "'Tomas Vondra'" <tomas(dot)vondra(at)enterprisedb(dot)com>, Amit Langote <amitlangote09(at)gmail(dot)com>, Zhihong Yu <zyu(at)yugabyte(dot)com>, "Andrey V(dot) Lepikhov" <a(dot)lepikhov(at)postgrespro(dot)ru>, Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: POC: postgres_fdw insert batching |
| Date: | 2021-01-21 02:03:46 |
| Message-ID: | 799652.1611194626@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
"tsunakawa(dot)takay(at)fujitsu(dot)com" <tsunakawa(dot)takay(at)fujitsu(dot)com> writes:
> Just for learning, could anyone tell me what this loop for? I thought current Postgres's DML supports a single target table, so it's enough to handle the first element of mtstate->resultRelInfo.
The "single target table" could be partitioned, in which case there'll be
multiple resultrelinfos, some of which could be foreign tables.
regards, tom lane
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