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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2013-03-22 00:31:11 -0400 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2013-03-22 00:31:11 -0400 |
| commit | e690b9515072fd7767fdeca5c54166f6a77733bc (patch) | |
| tree | 7cde9921ae7a25817b46d50bd15417c895868590 /contrib/postgres_fdw/postgres_fdw.h | |
| parent | 9cbc4b80ddc10b36c64514104caa69747c386dcf (diff) | |
| download | postgresql-e690b9515072fd7767fdeca5c54166f6a77733bc.tar.gz postgresql-e690b9515072fd7767fdeca5c54166f6a77733bc.zip | |
Avoid retrieving dummy NULL columns in postgres_fdw.
This should provide some marginal overall savings, since it surely takes
many more cycles for the remote server to deal with the NULL columns than
it takes for postgres_fdw not to emit them. But really the reason is to
keep the emitted queries from looking quite so silly ...
Diffstat (limited to 'contrib/postgres_fdw/postgres_fdw.h')
| -rw-r--r-- | contrib/postgres_fdw/postgres_fdw.h | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/contrib/postgres_fdw/postgres_fdw.h b/contrib/postgres_fdw/postgres_fdw.h index 78a57ea0575..2939d2b61da 100644 --- a/contrib/postgres_fdw/postgres_fdw.h +++ b/contrib/postgres_fdw/postgres_fdw.h @@ -49,7 +49,8 @@ extern bool is_foreign_expr(PlannerInfo *root, extern void deparseSelectSql(StringInfo buf, PlannerInfo *root, RelOptInfo *baserel, - Bitmapset *attrs_used); + Bitmapset *attrs_used, + List **retrieved_attrs); extern void appendWhereClause(StringInfo buf, PlannerInfo *root, RelOptInfo *baserel, @@ -58,14 +59,18 @@ extern void appendWhereClause(StringInfo buf, List **params); extern void deparseInsertSql(StringInfo buf, PlannerInfo *root, Index rtindex, Relation rel, - List *targetAttrs, List *returningList); + List *targetAttrs, List *returningList, + List **retrieved_attrs); extern void deparseUpdateSql(StringInfo buf, PlannerInfo *root, Index rtindex, Relation rel, - List *targetAttrs, List *returningList); + List *targetAttrs, List *returningList, + List **retrieved_attrs); extern void deparseDeleteSql(StringInfo buf, PlannerInfo *root, Index rtindex, Relation rel, - List *returningList); + List *returningList, + List **retrieved_attrs); extern void deparseAnalyzeSizeSql(StringInfo buf, Relation rel); -extern void deparseAnalyzeSql(StringInfo buf, Relation rel); +extern void deparseAnalyzeSql(StringInfo buf, Relation rel, + List **retrieved_attrs); #endif /* POSTGRES_FDW_H */ |