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First cut at full support for OUTER JOINs. There are still a few loose

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ends to clean up (see my message of same date to pghackers), but mostly
it works.  INITDB REQUIRED!
This commit is contained in:
Tom Lane
2000-09-12 21:07:18 +00:00
parent b5c0ab278b
commit ed5003c584
93 changed files with 6386 additions and 4262 deletions
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24
src/include/parser/parse_node.h
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@ -6,7 +6,7 @@
* Portions Copyright (c) 1996-2000, PostgreSQL, Inc
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: parse_node.h,v 1.20 2000/05/12 01:33:52 tgl Exp $
* $Id: parse_node.h,v 1.21 2000/09/12 21:07:12 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -16,36 +16,28 @@
#include "nodes/parsenodes.h"
#include "utils/rel.h"
/* State information used during parse analysis
* p_join_quals is a list of untransformed qualification expressions
* (implicitly ANDed together) found in the FROM clause.
* Needs to be available later to merge with other qualifiers from the
* WHERE clause.
/*
* State information used during parse analysis
*/
typedef struct ParseState
{
int p_last_resno;
List *p_rtable;
struct ParseState *parentParseState;
struct ParseState *parentParseState; /* stack link */
List *p_rtable; /* range table so far */
List *p_jointree; /* join tree so far */
int p_last_resno; /* last targetlist resno assigned */
bool p_hasAggs;
bool p_hasSubLinks;
bool p_is_insert;
bool p_is_update;
bool p_is_rule;
bool p_in_where_clause;
Relation p_target_relation;
RangeTblEntry *p_target_rangetblentry;
List *p_shape;
List *p_alias;
List *p_join_quals;
} ParseState;
extern ParseState *make_parsestate(ParseState *parentParseState);
extern Expr *make_op(char *opname, Node *ltree, Node *rtree);
extern Node *make_operand(char *opname, Node *tree,
Oid orig_typeId, Oid target_typeId);
extern Var *make_var(ParseState *pstate, Oid relid, char *refname,
char *attrname);
extern Var *make_var(ParseState *pstate, RangeTblEntry *rte, int attrno);
extern ArrayRef *transformArraySubscripts(ParseState *pstate,
Node *arrayBase,
List *indirection,