Allow the query for a plpgsql cursor to begin with '(' as well as 'SELECT'.

Per example from Kumar, 30-Oct-03.

diff --git a/src/pl/plpgsql/src/gram.y b/src/pl/plpgsql/src/gram.y
index a1408ab92ecc91473d0a977df51e1d562c7da104..22bd1ef8fd7ef0a7dd70c8bf104d2651bfe92fb1 100644 (file)
--- a/src/pl/plpgsql/src/gram.y
+++ b/src/pl/plpgsql/src/gram.y
@@ -4,7 +4,7 @@
  *                       procedural language
  *
  * IDENTIFICATION
- *   $Header: /cvsroot/pgsql/src/pl/plpgsql/src/gram.y,v 1.47 2003/09/25 23:02:12 tgl Exp $
+ *   $Header: /cvsroot/pgsql/src/pl/plpgsql/src/gram.y,v 1.48 2003/10/30 17:18:55 tgl Exp $
  *
  *   This software is copyrighted by Jan Wieck - Hamburg.
  *
@@ -393,7 +393,7 @@ decl_statement  : decl_varname decl_const decl_datatype decl_notnull decl_defval
                    }
                | decl_varname K_CURSOR
                    { plpgsql_ns_push(NULL); }
-                 decl_cursor_args decl_is_from K_SELECT decl_cursor_query
+                 decl_cursor_args decl_is_from decl_cursor_query
                    {
                        PLpgSQL_var *new;
                        PLpgSQL_expr *curname_def;
@@ -430,7 +430,7 @@ decl_statement  : decl_varname decl_const decl_datatype decl_notnull decl_defval
 
                        new->datatype = plpgsql_parse_datatype("refcursor");
 
-                       new->cursor_explicit_expr = $7;
+                       new->cursor_explicit_expr = $6;
                        if ($4 == NULL)
                            new->cursor_explicit_argrow = -1;
                        else
@@ -447,7 +447,7 @@ decl_cursor_query :
                        PLpgSQL_expr *query;
 
                        plpgsql_ns_setlocal(false);
-                       query = read_sql_stmt("SELECT ");
+                       query = read_sql_stmt("");
                        plpgsql_ns_setlocal(true);
                        
                        $$ = query;
@@ -1396,7 +1396,9 @@ stmt_open     : K_OPEN lno cursor_varptr
                            switch (tok)
                            {
                                case K_SELECT:
-                                   new->query = read_sql_stmt("SELECT ");
+                               case '(':
+                                   plpgsql_push_back_token(tok);
+                                   new->query = read_sql_stmt("");
                                    break;
 
                                case K_EXECUTE: