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Carry column aliases from the parser frontend. Enables queries like

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SELECT a FROM t1 tx (a);
Allow join syntax, including queries like
  SELECT * FROM t1 NATURAL JOIN t2;
Update RTE structure to hold column aliases in an Attr structure.
This commit is contained in:
Thomas G. Lockhart
2000-02-15 03:38:29 +00:00
parent 92c8437d8d
commit a344a6e7b5
27 changed files with 1102 additions and 324 deletions
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11
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 1.17 2000/01/26 05:58:27 momjian Exp $
* $Id: parse_node.h,v 1.18 2000/02/15 03:38:29 thomas Exp $
*
*-------------------------------------------------------------------------
*/
@ -16,7 +16,11 @@
#include "nodes/parsenodes.h"
#include "utils/rel.h"
/* state information used during parse analysis */
/* State information used during parse analysis
* p_join_quals is a list of qualification expressions
* found in the FROM clause. Needs to be available later
* to merge with other qualifiers from the WHERE clause.
*/
typedef struct ParseState
{
int p_last_resno;
@ -30,6 +34,9 @@ typedef struct ParseState
bool p_in_where_clause;
Relation p_target_relation;
RangeTblEntry *p_target_rangetblentry;
List *p_shape;
List *p_alias;
Node *p_join_quals;
} ParseState;
extern ParseState *make_parsestate(ParseState *parentParseState);