Re: AW: [HACKERS] Fix for tablename in targetlist - Mailing list pgsql-patches

From Bruce Momjian
Subject Re: AW: [HACKERS] Fix for tablename in targetlist
Date
Msg-id 200105211836.f4LIa1W10171@candle.pha.pa.us
Whole thread Raw
List pgsql-patches
Patch applied and attached.  TODO updated.

> Zeugswetter Andreas SB  <ZeugswetterA@wien.spardat.at> writes:
> >> select pg_class from pg_class;
>
> > Probably a valid interpretation would be if type pg_class or opaque had an
> > output function.
>
> Hmm, good point.  We shouldn't foreclose the possibility of handling
> things that way.  Okay, I'm convinced: allowing .* to be omitted isn't
> a good idea.
>
>             regards, tom lane
>
> ---------------------------(end of broadcast)---------------------------
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--
  Bruce Momjian                        |  http://candle.pha.pa.us
  pgman@candle.pha.pa.us               |  (610) 853-3000
  +  If your life is a hard drive,     |  830 Blythe Avenue
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Index: src/backend/parser/parse_expr.c
===================================================================
RCS file: /home/projects/pgsql/cvsroot/pgsql/src/backend/parser/parse_expr.c,v
retrieving revision 1.95
diff -c -r1.95 parse_expr.c
*** src/backend/parser/parse_expr.c    2001/05/19 00:33:20    1.95
--- src/backend/parser/parse_expr.c    2001/05/21 17:59:13
***************
*** 585,591 ****
--- 585,594 ----
          Node       *var = colnameToVar(pstate, ident->name);

          if (var != NULL)
+         {
+             ident->isRel = FALSE;
              result = transformIndirection(pstate, var, ident->indirection);
+         }
      }

      if (result == NULL)
Index: src/backend/parser/parse_target.c
===================================================================
RCS file: /home/projects/pgsql/cvsroot/pgsql/src/backend/parser/parse_target.c,v
retrieving revision 1.66
diff -c -r1.66 parse_target.c
*** src/backend/parser/parse_target.c    2001/03/22 03:59:41    1.66
--- src/backend/parser/parse_target.c    2001/05/21 17:59:14
***************
*** 55,60 ****
--- 55,63 ----
      if (expr == NULL)
          expr = transformExpr(pstate, node, EXPR_COLUMN_FIRST);

+     if (IsA(expr, Ident) && ((Ident *)expr)->isRel)
+         elog(ERROR,"You can't use relation names alone in the target list, try relation.*.");
+
      type_id = exprType(expr);
      type_mod = exprTypmod(expr);

Index: src/include/nodes/parsenodes.h
===================================================================
RCS file: /home/projects/pgsql/cvsroot/pgsql/src/include/nodes/parsenodes.h,v
retrieving revision 1.127
diff -c -r1.127 parsenodes.h
*** src/include/nodes/parsenodes.h    2001/05/07 00:43:25    1.127
--- src/include/nodes/parsenodes.h    2001/05/21 17:59:19
***************
*** 1080,1087 ****
      NodeTag        type;
      char       *name;            /* its name */
      List       *indirection;    /* array references */
!     bool        isRel;            /* is a relation - filled in by
!                                  * transformExpr() */
  } Ident;

  /*
--- 1080,1086 ----
      NodeTag        type;
      char       *name;            /* its name */
      List       *indirection;    /* array references */
!     bool        isRel;            /* is this a relation or a column? */
  } Ident;

  /*

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