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...

diff --git a/src/backend/parser/gram.y b/src/backend/parser/gram.y
index 6f4854c395b6eeac18c804d0b4d7e9a647ac2ed7..0e0015f3e4962c3ac83c51b7bf85bdb74369d698 100644 (file)
--- a/src/backend/parser/gram.y
+++ b/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    row_descriptor, row_list
+%type    row_descriptor, row_list, c_list, c_expr
 %type    row_expr
 %type         row_op
 %type    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; }