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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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7
src/include/nodes/nodes.h
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2000, PostgreSQL, Inc
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: nodes.h,v 1.76 2000/09/12 21:07:10 tgl Exp $
* $Id: nodes.h,v 1.77 2000/09/29 18:21:38 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -49,6 +49,7 @@ typedef enum NodeTag
T_Group,
T_SubPlan,
T_TidScan,
T_SubqueryScan,
/*---------------------
* TAGS FOR PRIMITIVE NODES (primnodes.h)
@ -69,6 +70,7 @@ typedef enum NodeTag
T_Iter,
T_RelabelType,
T_RangeTblRef,
T_FromExpr,
T_JoinExpr,
/*---------------------
@ -118,6 +120,7 @@ typedef enum NodeTag
T_UniqueState,
T_HashState,
T_TidScanState,
T_SubqueryScanState,
/*---------------------
* TAGS FOR MEMORY NODES (memnodes.h)
@ -222,7 +225,7 @@ typedef enum NodeTag
T_oldJoinExprXXX, /* not used anymore; this tag# is available */
T_CaseExpr,
T_CaseWhen,
T_RowMark,
T_RowMarkXXX, /* not used anymore; this tag# is available */
T_FkConstraint,
/*---------------------