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Parser Overhaul

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This commit is contained in:
Bruce Momjian
1996-10-30 02:02:41 +00:00
parent 1dfe4eaeb1
commit f59a46a8c8
10 changed files with 409 additions and 492 deletions
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44
src/backend/parser/gram.y
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@@ -10,7 +10,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 1.12 1996/09/20 08:34:14 scrappy Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 1.13 1996/10/30 02:01:54 momjian Exp $
*
* HISTORY
* AUTHOR DATE MAJOR EVENT
@@ -124,7 +124,7 @@ static Node *makeA_Expr(int op, char *opname, Node *lexpr, Node *rexpr);
tableElementList, OptInherit, definition,
opt_with_func, def_args, def_name_list, func_argtypes,
oper_argtypes, OptStmtList, OptStmtBlock, opt_column_list, columnList,
exprList, sort_clause, sortby_list, index_params,
sort_clause, sortby_list, index_params,
name_list, from_clause, from_list, opt_array_bounds, nest_array_bounds,
expr_list, attrs, res_target_list, res_target_list2, def_list,
opt_indirection, group_clause, groupby_list, explain_options
@@ -143,7 +143,7 @@ static Node *makeA_Expr(int op, char *opname, Node *lexpr, Node *rexpr);
%type <typnam> Typename, typname, opt_type
%type <coldef> columnDef
%type <defelt> def_elem
%type <node> def_arg, columnElem, exprElem, where_clause,
%type <node> def_arg, columnElem, where_clause,
a_expr, AexprConst, having_clause, groupby
%type <value> NumConst
%type <attr> event_object, attr
@@ -1244,17 +1244,17 @@ AppendStmt: INSERT INTO relation_name opt_column_list insert_rest
}
;
insert_rest: VALUES '(' exprList ')'
insert_rest: VALUES '(' res_target_list2 ')'
{
$$ = makeNode(AppendStmt);
$$->exprs = $3;
$$->targetList = $3;
$$->fromClause = NIL;
$$->whereClause = NULL;
}
| SELECT exprList from_clause where_clause
| SELECT res_target_list2 from_clause where_clause
{
$$ = makeNode(AppendStmt);
$$->exprs = $2;
$$->targetList = $2;
$$->fromClause = $3;
$$->whereClause = $4;
}
@@ -1280,36 +1280,6 @@ columnElem: Id opt_indirection
}
;
exprList: exprList ',' exprElem
{ $$ = lappend($1, $3); }
| exprElem
{ $$ = lcons($1, NIL); }
;
exprElem: a_expr
{ $$ = (Node *)$1; }
| relation_name '.' '*'
{
Attr *n = makeNode(Attr);
n->relname = $1;
n->paramNo = NULL;
n->attrs = lcons(makeString("*"), NIL);
n->indirection = NIL;
$$ = (Node *)n;
}
| '*'
{
Attr *n = makeNode(Attr);
n->relname = "*";
n->paramNo = NULL;
n->attrs = NIL;
n->indirection = NIL;
$$ = (Node *)n;
}
;
/*****************************************************************************
*
* QUERY: