Merge rama.(none):/home/jimw/my/mysql-5.0-21284

into  rama.(none):/home/jimw/my/mysql-5.1-clean

sql/field.h

@@ -118,6 +118,11 @@ public:
   */
   virtual String *val_str(String*,String *)=0;
   String *val_int_as_str(String *val_buffer, my_bool unsigned_flag);
+  /*
+   str_needs_quotes() returns TRUE if the value returned by val_str() needs
+   to be quoted when used in constructing an SQL query.
+  */
+  virtual bool str_needs_quotes() { return FALSE; }
   virtual Item_result result_type () const=0;
   virtual Item_result cmp_type () const { return result_type(); }
   virtual Item_result cast_to_int_type () const { return result_type(); }
@@ -412,6 +417,7 @@ public:
   uint32 max_length() { return field_length; }
   friend class create_field;
   my_decimal *val_decimal(my_decimal *);
+  virtual bool str_needs_quotes() { return TRUE; }
   uint is_equal(create_field *new_field);
 };
 
@@ -1379,6 +1385,7 @@ public:
   double val_real(void);
   longlong val_int(void);
   String *val_str(String*, String *);
+  virtual bool str_needs_quotes() { return TRUE; }
   my_decimal *val_decimal(my_decimal *);
   int cmp(const char *a, const char *b)
   { return cmp_binary(a, b); }

sql/ha_federated.cc

@@ -1142,7 +1142,7 @@ bool ha_federated::create_where_from_key(String *to,
       Field *field= key_part->field;
       uint store_length= key_part->store_length;
       uint part_length= min(store_length, length);
-      needs_quotes= 1;
+      needs_quotes= field->str_needs_quotes();
       DBUG_DUMP("key, start of loop", (char *) ptr, length);
 
       if (key_part->null_bit)
@@ -1663,23 +1663,22 @@ int ha_federated::write_row(byte *buf)
     {
       commas_added= TRUE;
       if ((*field)->is_null())
-        insert_field_value_string.append(STRING_WITH_LEN(" NULL "));
+        values_string.append(STRING_WITH_LEN(" NULL "));
       else
       {
+        bool needs_quote= (*field)->str_needs_quotes();
         (*field)->val_str(&insert_field_value_string);
-        values_string.append('\'');
+        if (needs_quote)
+          values_string.append('\'');
         insert_field_value_string.print(&values_string);
-        values_string.append('\'');
+        if (needs_quote)
+          values_string.append('\'');
 
         insert_field_value_string.length(0);
       }
       /* append the field name */
       insert_string.append((*field)->field_name);
 
-      /* append the value */
-      values_string.append(insert_field_value_string);
-      insert_field_value_string.length(0);
-
       /* append commas between both fields and fieldnames */
       /*
         unfortunately, we can't use the logic if *(fields + 1) to
@@ -1884,12 +1883,15 @@ int ha_federated::update_row(const byte *old_data, byte *new_data)
         update_string.append(STRING_WITH_LEN(" NULL "));
       else
       {
-        my_bitmap_map *old_map= tmp_use_all_columns(table, table->read_set);
         /* otherwise = */
+        my_bitmap_map *old_map= tmp_use_all_columns(table, table->read_set);
+        bool needs_quote= (*field)->str_needs_quotes();
 	(*field)->val_str(&field_value);
-        update_string.append('\'');
+        if (needs_quote)
+          update_string.append('\'');
         field_value.print(&update_string);
-        update_string.append('\'');
+        if (needs_quote)
+          update_string.append('\'');
         field_value.length(0);
         tmp_restore_column_map(table->read_set, old_map);
       }
@@ -1903,12 +1905,15 @@ int ha_federated::update_row(const byte *old_data, byte *new_data)
         where_string.append(STRING_WITH_LEN(" IS NULL "));
       else
       {
+        bool needs_quote= (*field)->str_needs_quotes();
         where_string.append(STRING_WITH_LEN(" = "));
         (*field)->val_str(&field_value,
                           (char*) (old_data + (*field)->offset()));
-	where_string.append('\'');
+        if (needs_quote)
+          where_string.append('\'');
         field_value.print(&where_string);
-	where_string.append('\'');
+        if (needs_quote)
+          where_string.append('\'');
         field_value.length(0);
       }
       where_string.append(STRING_WITH_LEN(" AND "));
@@ -1983,11 +1988,14 @@ int ha_federated::delete_row(const byte *buf)
       }
       else
       {
-      delete_string.append(STRING_WITH_LEN(" = "));
-      cur_field->val_str(&data_string);
-      delete_string.append('\'');
-      data_string.print(&delete_string);
-      delete_string.append('\'');
+        bool needs_quote= cur_field->str_needs_quotes();
+        delete_string.append(STRING_WITH_LEN(" = "));
+        cur_field->val_str(&data_string);
+        if (needs_quote)
+          delete_string.append('\'');
+        data_string.print(&delete_string);
+        if (needs_quote)
+          delete_string.append('\'');
       }
       delete_string.append(STRING_WITH_LEN(" AND "));
     }