OK I found it,

I search in the planner for the '\xFF' appending.
Finally I found in MakeIndexable() in gram.y

Attach a patch which removes the "<=" test in USE_LOCALE,
might make some queries a bit slower for us "locale-heads",
BUT correct result is more important.

        regards,
--
-----------------
Göran Thyni

diff --git a/src/backend/parser/gram.y b/src/backend/parser/gram.y
index 374206304a7254a69027e3147c320ed9d56192ba..75ebaf8628651b238bb23c566fdf936a292ab8f2 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 2.50 1999/02/02 03:44:42 momjian Exp $
+ *   $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.51 1999/02/02 19:20:54 momjian Exp $
  *
  * HISTORY
  *   AUTHOR            DATE            MAJOR EVENT
@@ -5257,11 +5257,17 @@ static Node *makeIndexable(char *opname, Node *lexpr, Node *rexpr)
                least->val.val.str = match_least;
                most->val.type = T_String;
                most->val.val.str = match_most;
+#ifdef USE_LOCALE
+               result = makeA_Expr(AND, NULL,
+                       makeA_Expr(OP, "~", lexpr, rexpr),
+                       makeA_Expr(OP, ">=", lexpr, (Node *)least));
+#else
                result = makeA_Expr(AND, NULL,
                        makeA_Expr(OP, "~", lexpr, rexpr),
                        makeA_Expr(AND, NULL,
                            makeA_Expr(OP, ">=", lexpr, (Node *)least),
                            makeA_Expr(OP, "<=", lexpr, (Node *)most)));
+#endif
            }
        }
    }
@@ -5304,11 +5310,17 @@ static Node *makeIndexable(char *opname, Node *lexpr, Node *rexpr)
                least->val.val.str = match_least;
                most->val.type = T_String;
                most->val.val.str = match_most;
+#ifdef USE_LOCALE
+               result = makeA_Expr(AND, NULL,
+                       makeA_Expr(OP, "~~", lexpr, rexpr),
+                       makeA_Expr(OP, ">=", lexpr, (Node *)least));
+#else
                result = makeA_Expr(AND, NULL,
                        makeA_Expr(OP, "~~", lexpr, rexpr),
                        makeA_Expr(AND, NULL,
                            makeA_Expr(OP, ">=", lexpr, (Node *)least),
                            makeA_Expr(OP, "<=", lexpr, (Node *)most)));
+#endif
            }
        }
    }