database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-02 09:02:37 +03:00
Code Activity

Fix deparsing of ON CONFLICT arbiter WHERE clauses.

Browse Source 
The parser doesn't allow qualification of column names appearing in
these clauses, but ruleutils.c would sometimes qualify them, leading
to dump/reload failures.  Per bug #13891 from Onder Kalaci.

(In passing, make stanzas in ruleutils.c that save/restore varprefix
more consistent.)

Peter Geoghegan
This commit is contained in:
Tom Lane
2016-02-07 14:57:24 -05:00
parent 1d76c97250
commit cc2ca9319a
2 changed files with 18 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
src/backend/utils/adt/ruleutils.c
View File

@ -5532,9 +5532,21 @@ get_insert_query_def(Query *query, deparse_context *context)
/* Add a WHERE clause (for partial indexes) if given */
if (confl->arbiterWhere != NULL)
{
bool save_varprefix;
/*
* Force non-prefixing of Vars, since parser assumes that they
* belong to target relation. WHERE clause does not use
* InferenceElem, so this is separately required.
*/
save_varprefix = context->varprefix;
context->varprefix = false;
appendContextKeyword(context, " WHERE ",
-PRETTYINDENT_STD, PRETTYINDENT_STD, 1);
get_rule_expr(confl->arbiterWhere, context, false);
context->varprefix = save_varprefix;
}
}
else if (confl->constraint != InvalidOid)
@ -7956,13 +7968,14 @@ get_rule_expr(Node *node, deparse_context *context,
case T_InferenceElem:
{
InferenceElem *iexpr = (InferenceElem *) node;
bool varprefix = context->varprefix;
bool save_varprefix;
bool need_parens;
/*
* InferenceElem can only refer to target relation, so a
* prefix is never useful.
* prefix is not useful, and indeed would cause parse errors.
*/
save_varprefix = context->varprefix;
context->varprefix = false;
/*
@ -7982,7 +7995,7 @@ get_rule_expr(Node *node, deparse_context *context,
if (need_parens)
appendStringInfoChar(buf, ')');
context->varprefix = varprefix;
context->varprefix = save_varprefix;
if (iexpr->infercollid)
appendStringInfo(buf, " COLLATE %s",