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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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55
src/backend/nodes/list.c
View File

@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/nodes/list.c,v 1.33 2000/09/12 21:06:49 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/nodes/list.c,v 1.34 2000/09/29 18:21:29 tgl Exp $
*
* NOTES
* XXX a few of the following functions are duplicated to handle
@@ -23,40 +23,9 @@
*-------------------------------------------------------------------------
*/
#include "postgres.h"
#include "nodes/parsenodes.h"
/*
* makeList
*
* Take varargs, terminated by -1, and make a List
*/
List *
makeList(void *elem,...)
{
va_list args;
List *retval = NIL;
List *temp = NIL;
List *tempcons = NIL;
va_start(args, elem);
temp = elem;
while (temp != (void *) -1)
{
temp = lcons(temp, NIL);
if (tempcons == NIL)
retval = temp;
else
lnext(tempcons) = temp;
tempcons = temp;
temp = va_arg(args, void *);
}
va_end(args);
return retval;
}
/*
* makeInteger
@@ -307,7 +276,7 @@ sameseti(List *list1, List *list2)
* as were in the inputs.
*/
List *
LispUnion(List *l1, List *l2)
set_union(List *l1, List *l2)
{
List *retval = listCopy(l1);
List *i;
@@ -321,7 +290,7 @@ LispUnion(List *l1, List *l2)
}
List *
LispUnioni(List *l1, List *l2)
set_unioni(List *l1, List *l2)
{
List *retval = listCopy(l1);
List *i;
@@ -385,7 +354,8 @@ intMember(int l1, List *l2)
/*
* lremove
* Removes 'elem' from the the linked list.
* Removes 'elem' from the linked list (destructively changing the list!).
*
* This version matches 'elem' using simple pointer comparison.
* See also LispRemove.
*/
@@ -414,7 +384,8 @@ lremove(void *elem, List *list)
/*
* LispRemove
* Removes 'elem' from the the linked list.
* Removes 'elem' from the linked list (destructively changing the list!).
*
* This version matches 'elem' using equal().
* (If there is more than one equal list member, the first is removed.)
* See also lremove.
@@ -442,10 +413,12 @@ LispRemove(void *elem, List *list)
return result;
}
#ifdef NOT_USED
/*
* lremovei
* lremove() for integer lists.
*/
List *
intLispRemove(int elem, List *list)
lremovei(int elem, List *list)
{
List *l;
List *prev = NIL;
@@ -467,8 +440,6 @@ intLispRemove(int elem, List *list)
return result;
}
#endif
/*
* ltruncate
* Truncate a list to n elements.