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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2000-10-05 19:11:39 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2000-10-05 19:11:39 +0000 |
| commit | 05e3d0ee8666b74f11ffad16f46e372459d6e53e (patch) | |
| tree | b273892bfda60f6bad315e84aaa2e9826e226931 /src/backend/executor/execMain.c | |
| parent | 5292637f52c6db8a22f99177f228273cb69fc510 (diff) | |
| download | postgresql-05e3d0ee8666b74f11ffad16f46e372459d6e53e.tar.gz postgresql-05e3d0ee8666b74f11ffad16f46e372459d6e53e.zip | |
Reimplementation of UNION/INTERSECT/EXCEPT. INTERSECT/EXCEPT now meet the
SQL92 semantics, including support for ALL option. All three can be used
in subqueries and views. DISTINCT and ORDER BY work now in views, too.
This rewrite fixes many problems with cross-datatype UNIONs and INSERT/SELECT
where the SELECT yields different datatypes than the INSERT needs. I did
that by making UNION subqueries and SELECT in INSERT be treated like
subselects-in-FROM, thereby allowing an extra level of targetlist where the
datatype conversions can be inserted safely.
INITDB NEEDED!
Diffstat (limited to 'src/backend/executor/execMain.c')
| -rw-r--r-- | src/backend/executor/execMain.c | 9 |
1 files changed, 2 insertions, 7 deletions
diff --git a/src/backend/executor/execMain.c b/src/backend/executor/execMain.c index a202da98d2e..3393559d630 100644 --- a/src/backend/executor/execMain.c +++ b/src/backend/executor/execMain.c @@ -27,7 +27,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/executor/execMain.c,v 1.128 2000/09/29 18:21:28 tgl Exp $ + * $Header: /cvsroot/pgsql/src/backend/executor/execMain.c,v 1.129 2000/10/05 19:11:26 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -463,7 +463,6 @@ ExecCheckPlanPerms(Plan *plan, List *rangeTable, CmdType operation) /* Append implements expansion of inheritance */ ExecCheckRTPerms(app->inheritrtable, operation); - /* Check appended plans w/outer rangetable */ foreach(appendplans, app->appendplans) { ExecCheckPlanPerms((Plan *) lfirst(appendplans), @@ -474,15 +473,11 @@ ExecCheckPlanPerms(Plan *plan, List *rangeTable, CmdType operation) else { /* Append implements UNION, which must be a SELECT */ - List *rtables = app->unionrtables; - - /* Check appended plans with their rangetables */ foreach(appendplans, app->appendplans) { ExecCheckPlanPerms((Plan *) lfirst(appendplans), - (List *) lfirst(rtables), + rangeTable, CMD_SELECT); - rtables = lnext(rtables); } } break; |