database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-17 06:41:09 +03:00
Code Activity

Phase 2 of read-only-plans project: restructure expression-tree nodes

Browse Source 
so that all executable expression nodes inherit from a common supertype
Expr.  This is somewhat of an exercise in code purity rather than any
real functional advance, but getting rid of the extra Oper or Func node
formerly used in each operator or function call should provide at least
a little space and speed improvement.
initdb forced by changes in stored-rules representation.
This commit is contained in:
Tom Lane
2002-12-12 15:49:42 +00:00
parent debb072886
commit a0bf885f9e
69 changed files with 3390 additions and 3433 deletions
Download Patch File Download Diff File Expand all files Collapse all files

33
src/backend/optimizer/path/pathkeys.c
View File

@ -11,7 +11,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/pathkeys.c,v 1.41 2002/09/18 21:35:21 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/pathkeys.c,v 1.42 2002/12/12 15:49:32 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -514,22 +514,9 @@ build_index_pathkeys(Query *root,
if (index->indproc)
{
/* Functional index: build a representation of the function call */
Func *funcnode = makeNode(Func);
Expr *funcnode;
List *funcargs = NIL;
funcnode->funcid = index->indproc;
funcnode->funcresulttype = get_func_rettype(index->indproc);
funcnode->funcretset = false; /* can never be a set */
funcnode->funcformat = COERCE_DONTCARE; /* to match any user expr */
funcnode->func_fcache = NULL;
while (*indexkeys != 0)
{
funcargs = lappend(funcargs,
find_indexkey_var(root, rel, *indexkeys));
indexkeys++;
}
sortop = *ordering;
if (ScanDirectionIsBackward(scandir))
{
@ -538,9 +525,21 @@ build_index_pathkeys(Query *root,
return NIL; /* oops, no reverse sort operator? */
}
while (*indexkeys != 0)
{
funcargs = lappend(funcargs,
find_indexkey_var(root, rel, *indexkeys));
indexkeys++;
}
funcnode = make_funcclause(index->indproc,
get_func_rettype(index->indproc),
false, /* cannot be a set */
COERCE_DONTCARE, /* to match any user expr */
funcargs);
/* Make a one-sublist pathkeys list for the function expression */
item = makePathKeyItem((Node *) make_funcclause(funcnode, funcargs),
sortop);
item = makePathKeyItem((Node *) funcnode, sortop);
retval = makeList1(make_canonical_pathkey(root, item));
}
else