Allow comment-only lines, and ;;; lines too.

diff --git a/src/backend/parser/gram.y b/src/backend/parser/gram.y
index 87c82839df460c81b854443d144c3b0a4564f5e4..006e545c3af107bebdee2dc909c7cd4697e615e4 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 2.106 1999/10/03 23:55:30 tgl Exp $
+ *   $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.107 1999/10/05 18:14:31 momjian Exp $
  *
  * HISTORY
  *   AUTHOR            DATE            MAJOR EVENT
@@ -365,20 +365,29 @@ Oid   param_type(int t); /* used in parse_expr.c */
 %left      UNION INTERSECT EXCEPT
 %%
 
-stmtblock:  stmtmulti opt_semi
+/*
+ * Handle comment-only lines, and ;; SELECT * FROM pg_class ;;;
+ * psql already handles such cases, but other interfaces don't.
+ * bjm 1999/10/05
+ */
+stmtblock:  stmtmulti
                { parsetree = $1; }
        ;
 
 stmtmulti:  stmtmulti ';' stmt
-               { $$ = lappend($1, $3); }
+               { if ($3 != (Node *)NIL)
+                   $$ = lappend($1, $3);
+                 else
+                   $$ = $1;
+               }
        | stmt
-               { $$ = lcons($1,NIL); }
+               { if ($1 != (Node *)NIL)
+                   $$ = lcons($1,NIL);
+                 else
+                   $$ = (Node *)NIL;
+               }
        ;
 
-opt_semi:  ';'
-       |   /*EMPTY*/
-       ;
-       
 stmt :   AddAttrStmt
        | AlterUserStmt
        | ClosePortalStmt
@@ -423,6 +432,8 @@ stmt :    AddAttrStmt
        | VariableShowStmt
        | VariableResetStmt
        | ConstraintsSetStmt
+       |   /*EMPTY*/
+               { $$ = (Node *)NIL; }
        ;
 
 /*****************************************************************************