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Subselects in FROM clause, per ISO syntax: FROM (SELECT ...) [AS] alias.

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(Don't forget that an alias is required.)  Views reimplemented as expanding
to subselect-in-FROM.  Grouping, aggregates, DISTINCT in views actually
work now (he says optimistically).  No UNION support in subselects/views
yet, but I have some ideas about that.  Rule-related permissions checking
moved out of rewriter and into executor.
INITDB REQUIRED!
This commit is contained in:
Tom Lane
2000-09-29 18:21:41 +00:00
parent 6f64c2e54a
commit 3a94e789f5
77 changed files with 3176 additions and 2661 deletions
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13
src/backend/commands/command.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/Attic/command.c,v 1.103 2000/09/12 21:06:47 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/commands/Attic/command.c,v 1.104 2000/09/29 18:21:26 tgl Exp $
*
* NOTES
* The PerformAddAttribute() code, like most of the relation
@ -1135,7 +1135,7 @@ AlterTableAddConstraint(char *relationName,
else
name="<unnamed>";
constlist=lcons(constr, NIL);
constlist = makeList1(constr);
rel = heap_openr(relationName, AccessExclusiveLock);
@ -1158,10 +1158,11 @@ AlterTableAddConstraint(char *relationName,
makeRangeTable(pstate, NULL);
rte = addRangeTableEntry(pstate, relationName, NULL,
false, true);
addRTEtoJoinTree(pstate, rte);
addRTEtoJoinList(pstate, rte);
/* Convert the A_EXPR in raw_expr into an EXPR */
expr = transformExpr(pstate, constr->raw_expr, EXPR_COLUMN_FIRST);
expr = transformExpr(pstate, constr->raw_expr,
EXPR_COLUMN_FIRST);
/*
* Make sure it yields a boolean result.
@ -1185,14 +1186,14 @@ AlterTableAddConstraint(char *relationName,
/* And fix the opids */
fix_opids(expr);
qual = lcons(expr, NIL);
qual = makeList1(expr);
rte = makeNode(RangeTblEntry);
rte->relname = relationName;
rte->relid = RelationGetRelid(rel);
rte->eref = makeNode(Attr);
rte->eref->relname = relationName;
rtlist = lcons(rte, NIL);
rtlist = makeList1(rte);
/*
* Scan through the rows now, making the necessary things