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Allow ON CONFLICT .. DO NOTHING on a partitioned table.

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ON CONFLICT .. DO UPDATE still doesn't work, for lack of a way of
enforcing uniqueness across partitions, but we can still allow this
case.

Amit Langote, per discussion with Peter Geoghegan.  Additional
wordsmithing by me.

Discussion: http://postgr.es/m/CAA-aLv7Z4uygtq-Q5CvDi9Y=VZxUyEnuWjL=EwCfOof=L04hgg@mail.gmail.com
This commit is contained in:
Robert Haas
2017-03-27 10:37:29 -04:00
parent 3371e4d9b1
commit 8355a011a0
4 changed files with 26 additions and 10 deletions
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8
src/backend/parser/analyze.c
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@@ -842,16 +842,8 @@ transformInsertStmt(ParseState *pstate, InsertStmt *stmt)
/* Process ON CONFLICT, if any. */
if (stmt->onConflictClause)
{
/* Bail out if target relation is partitioned table */
if (pstate->p_target_rangetblentry->relkind == RELKIND_PARTITIONED_TABLE)
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("ON CONFLICT clause is not supported with partitioned tables")));
qry->onConflict = transformOnConflictClause(pstate,
stmt->onConflictClause);
}
/*
* If we have a RETURNING clause, we need to add the target relation to