database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-11-04 20:11:56 +03:00
Code Activity

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

Browse Source 
(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
Download Patch File Download Diff File Expand all files Collapse all files

20
src/include/nodes/pg_list.h
View File

@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2000, PostgreSQL, Inc
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: pg_list.h,v 1.19 2000/09/12 21:07:10 tgl Exp $
* $Id: pg_list.h,v 1.20 2000/09/29 18:21:39 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -92,6 +92,18 @@ typedef struct List
#define foreach(_elt_,_list_) \
for(_elt_=(_list_); _elt_!=NIL; _elt_=lnext(_elt_))
/*
* Convenience macros for building fixed-length lists
*/
#define makeList1(x1) lcons(x1, NIL)
#define makeList2(x1,x2) lcons(x1, makeList1(x2))
#define makeList3(x1,x2,x3) lcons(x1, makeList2(x2,x3))
#define makeList4(x1,x2,x3,x4) lcons(x1, makeList3(x2,x3,x4))
#define makeListi1(x1) lconsi(x1, NIL)
#define makeListi2(x1,x2) lconsi(x1, makeListi1(x2))
#define makeListi3(x1,x2,x3) lconsi(x1, makeListi2(x2,x3))
#define makeListi4(x1,x2,x3,x4) lconsi(x1, makeListi3(x2,x3,x4))
/*
* function prototypes in nodes/list.c
@@ -106,11 +118,11 @@ extern bool intMember(int datum, List *list);
extern Value *makeInteger(long i);
extern Value *makeFloat(char *numericStr);
extern Value *makeString(char *str);
extern List *makeList(void *elem,...);
extern List *lappend(List *list, void *datum);
extern List *lappendi(List *list, int datum);
extern List *lremove(void *elem, List *list);
extern List *LispRemove(void *elem, List *list);
extern List *lremovei(int elem, List *list);
extern List *ltruncate(int n, List *list);
extern void *nth(int n, List *l);
@@ -120,8 +132,8 @@ extern void set_nth(List *l, int n, void *elem);
extern List *set_difference(List *list1, List *list2);
extern List *set_differencei(List *list1, List *list2);
extern List *lreverse(List *l);
extern List *LispUnion(List *list1, List *list2);
extern List *LispUnioni(List *list1, List *list2);
extern List *set_union(List *list1, List *list2);
extern List *set_unioni(List *list1, List *list2);
extern bool sameseti(List *list1, List *list2);
extern bool nonoverlap_setsi(List *list1, List *list2);