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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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11
src/backend/parser/parse_func.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/parse_func.c,v 1.90 2000/09/12 21:07:02 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/parse_func.c,v 1.91 2000/09/29 18:21:36 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -76,7 +76,7 @@ ParseNestedFuncOrColumn(ParseState *pstate, Attr *attr, int precedence)
EXPR_RELATION_FIRST);
retval = ParseFuncOrColumn(pstate, strVal(lfirst(attr->attrs)),
lcons(param, NIL),
makeList1(param),
false, false,
precedence);
}
@ -87,7 +87,7 @@ ParseNestedFuncOrColumn(ParseState *pstate, Attr *attr, int precedence)
ident->name = attr->relname;
ident->isRel = TRUE;
retval = ParseFuncOrColumn(pstate, strVal(lfirst(attr->attrs)),
lcons(ident, NIL),
makeList1(ident),
false, false,
precedence);
}
@ -96,7 +96,7 @@ ParseNestedFuncOrColumn(ParseState *pstate, Attr *attr, int precedence)
foreach(mutator_iter, lnext(attr->attrs))
{
retval = ParseFuncOrColumn(pstate, strVal(lfirst(mutator_iter)),
lcons(retval, NIL),
makeList1(retval),
false, false,
precedence);
}
@ -447,6 +447,9 @@ ParseFuncOrColumn(ParseState *pstate, char *funcname, List *fargs,
* but has varattno == 0 to signal that the whole tuple is the
* argument.
*/
if (rte->relname == NULL)
elog(ERROR,
"function applied to tuple is not supported for subSELECTs");
toid = typeTypeId(typenameType(rte->relname));
/* replace it in the arg list */