Allow NOT LIKE, IN, NOT IN, BETWEEN, and NOT BETWEEN expressions

 in constraint clauses.
 IN and NOT IN only allow constaints, not subselects.
Jose' Soares' new reference docs pointed out the discrepency.
 Updating the docs too...

src/backend/parser/gram.y

@@ -10,7 +10,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.21 1998/08/05 04:49:08 scrappy Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.22 1998/08/17 16:08:34 thomas Exp $
  *
  * HISTORY
  *	  AUTHOR			DATE			MAJOR EVENT
@@ -204,7 +204,7 @@ Oid	param_type(int t); /* used in parse_expr.c */
 				a_expr, a_expr_or_null, b_expr, AexprConst,
 				in_expr, in_expr_nodes, not_in_expr, not_in_expr_nodes,
 				having_clause
-%type <list>	row_descriptor, row_list
+%type <list>	row_descriptor, row_list, c_list, c_expr
 %type <node>	row_expr
 %type <str>		row_op
 %type <ival>	sub_type
@@ -1043,7 +1043,9 @@ constraint_expr:  AexprConst
 			| constraint_expr Op constraint_expr
 				{	$$ = nconc( $1, lcons( makeString( $2), $3)); }
 			| constraint_expr LIKE constraint_expr
-				{	$$ = nconc( $1, lcons( makeString( "like"), $3)); }
+				{	$$ = nconc( $1, lcons( makeString( "LIKE"), $3)); }
+			| constraint_expr NOT LIKE constraint_expr
+				{	$$ = nconc( $1, lcons( makeString( "NOT LIKE"), $4)); }
 			| constraint_expr AND constraint_expr
 				{	$$ = nconc( $1, lcons( makeString( "AND"), $3)); }
 			| constraint_expr OR constraint_expr
@@ -1070,6 +1072,49 @@ constraint_expr:  AexprConst
 				{	$$ = lappend( $1, makeString( "IS NOT TRUE")); }
 			| constraint_expr IS NOT FALSE_P
 				{	$$ = lappend( $1, makeString( "IS NOT FALSE")); }
+			| constraint_expr IN '(' c_list ')'
+				{
+					$$ = lappend( $1, makeString("IN"));
+					$$ = lappend( $$, makeString("("));
+					$$ = nconc( $$, $4);
+					$$ = lappend( $$, makeString(")"));
+				}
+			| constraint_expr NOT IN '(' c_list ')'
+				{
+					$$ = lappend( $1, makeString("NOT IN"));
+					$$ = lappend( $$, makeString("("));
+					$$ = nconc( $$, $5);
+					$$ = lappend( $$, makeString(")"));
+				}
+			| constraint_expr BETWEEN c_expr AND c_expr
+				{
+					$$ = lappend( $1, makeString("BETWEEN"));
+					$$ = nconc( $$, $3);
+					$$ = lappend( $$, makeString("AND"));
+					$$ = nconc( $$, $5);
+				}
+			| constraint_expr NOT BETWEEN c_expr AND c_expr
+				{
+					$$ = lappend( $1, makeString("NOT BETWEEN"));
+					$$ = nconc( $$, $4);
+					$$ = lappend( $$, makeString("AND"));
+					$$ = nconc( $$, $6);
+				}
+		;
+
+c_list:  c_list ',' c_expr
+				{
+					$$ = lappend($1, makeString(","));
+					$$ = nconc($$, $3);
+				}
+			| c_expr
+				{
+					$$ = $1;
+				}
+		;
+
+c_expr:  AexprConst
+				{	$$ = makeConstantList((A_Const *) $1); }
 		;
 
 key_match:  MATCH FULL					{ $$ = NULL; }