BUG#16002: Make partition functions that are unsigned work properly

mysql-test/r/partition.result

 drop table if exists t1;
+create table t1 (a bigint unsigned);
+insert into t1 values (0xFFFFFFFFFFFFFFFD);
+insert into t1 values (0xFFFFFFFFFFFFFFFE);
+select * from t1 where (a + 1) < 10;
+a
+select * from t1 where (a + 1) > 10;
+a
+18446744073709551613
+18446744073709551614
+drop table t1;
 CREATE TABLE t1 (
 a int not null,
 b int not null,
@@ -839,4 +849,14 @@ SHOW TABLE STATUS;
 Name	Engine	Version	Row_format	Rows	Avg_row_length	Data_length	Max_data_length	Index_length	Data_free	Auto_increment	Create_time	Update_time	Check_time	Collation	Checksum	Create_options	Comment
 t1	MyISAM	10	Dynamic	0	0	0	0	0	0	NULL	NULL	NULL	NULL	latin1_swedish_ci	NULL	partitioned	
 DROP TABLE t1;
+create table t1 (a bigint unsigned)
+partition by list (a)
+(partition p0 values in (0-1));
+ERROR HY000: Partition function is unsigned, cannot have negative constants
+create table t1 (a bigint unsigned)
+partition by range (a)
+(partition p0 values less than (10));
+insert into t1 values (0xFFFFFFFFFFFFFFFF);
+ERROR HY000: Table has no partition for value 18446744073709551615
+drop table t1;
 End of 5.1 tests

mysql-test/r/partition_error.result

@@ -554,3 +554,7 @@ PARTITION BY RANGE (a) (PARTITION p1 VALUES LESS THAN(5));
 insert into t1 values (10);
 ERROR HY000: Table has no partition for value 10
 drop table t1;
+create table t1 (a bigint unsigned)
+partition by range (a)
+(partition p0 values less than (-1));
+ERROR HY000: Partition function is unsigned, cannot have negative constants

mysql-test/r/partition_range.result

@@ -363,3 +363,15 @@ SELECT COUNT(*) FROM t1 WHERE c3 < '2000-12-31';
 COUNT(*)
 10
 DROP TABLE t1;
+create table t1 (a bigint unsigned)
+partition by range (a)
+(partition p0 values less than (0),
+partition p1 values less than (10));
+ERROR HY000: VALUES LESS THAN value must be strictly increasing for each partition
+create table t1 (a bigint unsigned)
+partition by range (a)
+(partition p0 values less than (2),
+partition p1 values less than (10));
+insert into t1 values (0xFFFFFFFFFFFFFFFF);
+ERROR HY000: Table has no partition for value 18446744073709551615
+drop table t1;

mysql-test/t/partition.test

@@ -9,6 +9,13 @@
 drop table if exists t1;
 --enable_warnings
 
+create table t1 (a bigint unsigned);
+insert into t1 values (0xFFFFFFFFFFFFFFFD);
+insert into t1 values (0xFFFFFFFFFFFFFFFE);
+select * from t1 where (a + 1) < 10;
+select * from t1 where (a + 1) > 10;
+drop table t1;
+
 #
 # Partition by key no partition defined => OK
 #
@@ -956,4 +963,20 @@ PARTITION p2 VALUES LESS THAN (30) ENGINE = MyISAM);
 SHOW TABLE STATUS;
 DROP TABLE t1;
 
+#
+#BUG 16002 Erroneus handling of unsigned partition functions
+#
+--error ER_SIGNED_PARTITION_CONSTANT_ERROR
+create table t1 (a bigint unsigned)
+partition by list (a)
+(partition p0 values in (0-1));
+
+create table t1 (a bigint unsigned)
+partition by range (a)
+(partition p0 values less than (10));
+
+--error ER_NO_PARTITION_FOR_GIVEN_VALUE
+insert into t1 values (0xFFFFFFFFFFFFFFFF);
+drop table t1;
+
 --echo End of 5.1 tests

mysql-test/t/partition_error.test

@@ -747,3 +747,8 @@ CREATE TABLE t1(a int)
 --error ER_NO_PARTITION_FOR_GIVEN_VALUE
 insert into t1 values (10);
 drop table t1;
+
+--error ER_SIGNED_PARTITION_CONSTANT_ERROR
+create table t1 (a bigint unsigned)
+partition by range (a)
+(partition p0 values less than (-1));

mysql-test/t/partition_range.test

@@ -388,3 +388,20 @@ SELECT COUNT(*) FROM t1 WHERE c3 BETWEEN '1996-12-31' AND '2000-12-31';
 SELECT COUNT(*) FROM t1 WHERE c3 < '2000-12-31';
 DROP TABLE t1;
 
+#
+# BUG 16002: Unsigned partition functions not handled correctly
+#
+--error ER_RANGE_NOT_INCREASING_ERROR
+create table t1 (a bigint unsigned)
+partition by range (a)
+(partition p0 values less than (0),
+ partition p1 values less than (10));
+
+create table t1 (a bigint unsigned)
+partition by range (a)
+(partition p0 values less than (2),
+ partition p1 values less than (10));
+--error ER_NO_PARTITION_FOR_GIVEN_VALUE
+insert into t1 values (0xFFFFFFFFFFFFFFFF);
+
+drop table t1;

sql/ha_partition.cc

@@ -5165,10 +5165,21 @@ void ha_partition::print_error(int error, myf errflag)
   if (error == HA_ERR_NO_PARTITION_FOUND)
   {
     char buf[100];
+    longlong value= m_part_info->part_expr->val_int();
+    if (!m_part_info->part_expr->unsigned_flag ||
+        m_part_info->part_expr->null_value)
+    {
       my_error(ER_NO_PARTITION_FOR_GIVEN_VALUE, MYF(0),
                m_part_info->part_expr->null_value ? "NULL" :
                llstr(m_part_info->part_expr->val_int(), buf));
     }
+    else
+    {
+      ulonglong value= m_part_info->part_expr->val_int();
+      longlong2str(value, buf, 10);
+      my_error(ER_NO_PARTITION_FOR_GIVEN_VALUE, MYF(0), buf);
+    }
+  }
   else
     m_file[0]->print_error(error, errflag);
   DBUG_VOID_RETURN;

sql/partition_element.h

@@ -36,15 +36,22 @@ enum partition_state {
   PART_IS_ADDED= 8
 };
 
+typedef struct p_elem_val
+{
+  longlong value;
+  bool null_value;
+  bool unsigned_flag;
+} part_elem_value;
+
 class partition_element :public Sql_alloc {
 public:
   List<partition_element> subpartitions;
-  List<longlong> list_val_list;
+  List<part_elem_value> list_val_list;
   ulonglong part_max_rows;
   ulonglong part_min_rows;
+  longlong range_value;
   char *partition_name;
   char *tablespace_name;
-  longlong range_value;
   char* part_comment;
   char* data_file_name;
   char* index_file_name;
@@ -52,13 +59,16 @@ class partition_element :public Sql_alloc {
   enum partition_state part_state;
   uint16 nodegroup_id;
   bool has_null_value;
+  bool signed_flag;
+  bool max_value;
 
   partition_element()
-  : part_max_rows(0), part_min_rows(0), partition_name(NULL),
-    tablespace_name(NULL), range_value(0), part_comment(NULL),
+  : part_max_rows(0), part_min_rows(0), range_value(0),
+    partition_name(NULL), tablespace_name(NULL), part_comment(NULL),
     data_file_name(NULL), index_file_name(NULL),
-    engine_type(NULL),part_state(PART_NORMAL),
-    nodegroup_id(UNDEF_NODEGROUP), has_null_value(FALSE)
+    engine_type(NULL), part_state(PART_NORMAL),
+    nodegroup_id(UNDEF_NODEGROUP), has_null_value(FALSE),
+    signed_flag(FALSE), max_value(FALSE)
   {
     subpartitions.empty();
     list_val_list.empty();

sql/partition_info.cc

@@ -445,10 +445,12 @@ bool partition_info::check_range_constants()
 {
   partition_element* part_def;
   longlong current_largest_int= LONGLONG_MIN;
+  ulonglong current_largest_uint= 0;
   longlong part_range_value_int;
   uint i;
   List_iterator<partition_element> it(partitions);
   bool result= TRUE;
+  bool signed_flag= !part_expr->unsigned_flag;
   DBUG_ENTER("partition_info::check_range_constants");
   DBUG_PRINT("enter", ("INT_RESULT with %d parts", no_parts));
 
@@ -463,6 +465,8 @@ bool partition_info::check_range_constants()
   do
   {
     part_def= it++;
+    if (signed_flag)
+    {
       if ((i != (no_parts - 1)) || !defined_max_value)
         part_range_value_int= part_def->range_value; 
       else
@@ -477,6 +481,25 @@ bool partition_info::check_range_constants()
         my_error(ER_RANGE_NOT_INCREASING_ERROR, MYF(0));
         goto end;
       }
+    }
+    else
+    {
+      ulonglong upart_range_value_int;
+      if ((i != (no_parts - 1)) || !defined_max_value)
+        upart_range_value_int= part_def->range_value; 
+      else
+        upart_range_value_int= ULONGLONG_MAX;
+      if (likely(current_largest_uint < upart_range_value_int))
+      {
+        current_largest_uint= upart_range_value_int;
+        range_int_array[i]= part_range_value_int;
+      }
+      else
+      {
+        my_error(ER_RANGE_NOT_INCREASING_ERROR, MYF(0));
+        goto end;
+      }
+    }
   } while (++i < no_parts);
   result= FALSE;
 end:
@@ -485,8 +508,8 @@ bool partition_info::check_range_constants()
 
 
 /*
-  A support routine for check_list_constants used by qsort to sort the
-  constant list expressions.
+  Support routines for check_list_constants used by qsort to sort the
+  constant list expressions. One routine for unsigned and one for signed.
 
   SYNOPSIS
     list_part_cmp()
@@ -511,6 +534,18 @@ int partition_info::list_part_cmp(const void* a, const void* b)
     return 0;
 }
 
+int partition_info::list_part_cmp_unsigned(const void* a, const void* b)
+{
+  ulonglong a1= ((LIST_PART_ENTRY*)a)->list_value;
+  ulonglong b1= ((LIST_PART_ENTRY*)b)->list_value;
+  if (a1 < b1)
+    return -1;
+  else if (a1 > b1)
+    return +1;
+  else
+    return 0;
+}
+
 
 /*
   This routine allocates an array for all list constants to achieve a fast
@@ -536,7 +571,7 @@ bool partition_info::check_list_constants()
 {
   uint i;
   uint list_index= 0;
-  longlong *list_value;
+  part_elem_value *list_value;
   bool not_first;
   bool result= TRUE;
   longlong curr_value, prev_value;
@@ -577,7 +612,7 @@ bool partition_info::check_list_constants()
       has_null_part_id= i;
       found_null= TRUE;
     }
-    List_iterator<longlong> list_val_it1(part_def->list_val_list);
+    List_iterator<part_elem_value> list_val_it1(part_def->list_val_list);
     while (list_val_it1++)
       no_list_values++;
   } while (++i < no_parts);
@@ -593,16 +628,22 @@ bool partition_info::check_list_constants()
   do
   {
     part_def= list_func_it++;
-    List_iterator<longlong> list_val_it2(part_def->list_val_list);
+    List_iterator<part_elem_value> list_val_it2(part_def->list_val_list);
     while ((list_value= list_val_it2++))
     {
-      list_array[list_index].list_value= *list_value;
+      list_array[list_index].list_value= list_value->value;
       list_array[list_index++].partition_id= i;
     }
   } while (++i < no_parts);
 
+  if (fixed)
+  {
+    if (!part_expr->unsigned_flag)
       qsort((void*)list_array, no_list_values, sizeof(LIST_PART_ENTRY), 
             &list_part_cmp);
+    else
+      qsort((void*)list_array, no_list_values, sizeof(LIST_PART_ENTRY), 
+            &list_part_cmp_unsigned);
 
     not_first= FALSE;
     i= prev_value= 0; //prev_value initialised to quiet compiler
@@ -620,6 +661,7 @@ bool partition_info::check_list_constants()
         goto end;
       }
     } while (++i < no_list_values);
+  }
   result= FALSE;
 end:
   DBUG_RETURN(result);
@@ -647,7 +689,7 @@ bool partition_info::check_list_constants()
 
 */
 
-bool partition_info::check_partition_info(handlerton **eng_type,
+bool partition_info::check_partition_info(THD *thd, handlerton **eng_type,
                                           handler *file, ulonglong max_rows)
 {
   handlerton **engine_array= NULL;
@@ -733,9 +775,12 @@ bool partition_info::check_partition_info(handlerton **eng_type,
     list constants.
   */
 
+  if (fixed)
+  {
     if (unlikely((part_type == RANGE_PARTITION && check_range_constants()) ||
                   (part_type == LIST_PARTITION && check_list_constants())))
       goto end;
+  }
   result= FALSE;
 end:
   my_free((char*)engine_array,MYF(MY_ALLOW_ZERO_PTR));

sql/partition_info.h

@@ -163,6 +163,7 @@ class partition_info : public Sql_alloc
   uint no_subpart_fields;
   uint no_full_part_fields;
 
+  uint has_null_part_id;
   /*
     This variable is used to calculate the partition id when using
     LINEAR KEY/HASH. This functionality is kept in the MySQL Server
@@ -182,7 +183,6 @@ class partition_info : public Sql_alloc
   bool fixed;
   bool from_openfrm;
   bool has_null_value;
-  uint has_null_part_id;
 
 
   partition_info()
@@ -204,19 +204,13 @@ class partition_info : public Sql_alloc
     no_parts(0), no_subparts(0),
     count_curr_subparts(0), part_error_code(0),
     no_list_values(0), no_part_fields(0), no_subpart_fields(0),
-    no_full_part_fields(0), linear_hash_mask(0),
-    use_default_partitions(TRUE),
-    use_default_no_partitions(TRUE),
-    use_default_subpartitions(TRUE),
-    use_default_no_subpartitions(TRUE),
-    default_partitions_setup(FALSE),
-    defined_max_value(FALSE),
+    no_full_part_fields(0), has_null_part_id(0), linear_hash_mask(0),
+    use_default_partitions(TRUE), use_default_no_partitions(TRUE),
+    use_default_subpartitions(TRUE), use_default_no_subpartitions(TRUE),
+    default_partitions_setup(FALSE), defined_max_value(FALSE),
     list_of_part_fields(FALSE), list_of_subpart_fields(FALSE),
-    linear_hash_ind(FALSE),
-    fixed(FALSE),
-    from_openfrm(FALSE),
-    has_null_value(FALSE),
-    has_null_part_id(0)
+    linear_hash_ind(FALSE), fixed(FALSE), from_openfrm(FALSE),
+    has_null_value(FALSE)
   {
     all_fields_in_PF.clear_all();
     all_fields_in_PPF.clear_all();
@@ -248,10 +242,11 @@ class partition_info : public Sql_alloc
   static bool check_engine_mix(handlerton **engine_array, uint no_parts);
   bool check_range_constants();
   bool check_list_constants();
-  bool check_partition_info(handlerton **eng_type,
+  bool check_partition_info(THD *thd, handlerton **eng_type,
                             handler *file, ulonglong max_rows);
 private:
   static int list_part_cmp(const void* a, const void* b);
+  static int list_part_cmp_unsigned(const void* a, const void* b);
   bool set_up_default_partitions(handler *file, ulonglong max_rows,
                                  uint start_no);
   bool set_up_default_subpartitions(handler *file, ulonglong max_rows);

sql/share/errmsg.txt

@@ -5826,3 +5826,6 @@ ER_NDB_CANT_SWITCH_BINLOG_FORMAT
 	eng "The NDB cluster engine does not support changing the binlog format on the fly yet"
 ER_PARTITION_NO_TEMPORARY
 	eng "Cannot create temporary table with partitions"
+ER_SIGNED_PARTITION_CONSTANT_ERROR
+        eng "Partition function is unsigned, cannot have negative constants"
+        swe "Partitionsfunktionen r positiv, kan inte ha negativa konstanter"

sql/sql_partition.cc

@@ -61,7 +61,6 @@ static const char *equal_str= "=";
 static const char *end_paren_str= ")";
 static const char *begin_paren_str= "(";
 static const char *comma_str= ",";
-static char buff[22];
 
 int get_partition_id_list(partition_info *part_info,
                            uint32 *part_id,
@@ -189,9 +188,9 @@ bool is_name_in_list(char *name,
   SYNOPSIS
     partition_default_handling()
     table                         Table object
-    table_name                    Table name to use when getting no_parts
-    db_name                       Database name to use when getting no_parts
     part_info                     Partition info to set up
+    is_create_table_ind           Is this part of a table creation
+    normalized_path               Normalized path name of table and database
 
   RETURN VALUES
     TRUE                          Error
@@ -793,6 +792,43 @@ static bool handle_list_of_fields(List_iterator<char> it,
 }
 
 
+/*
+  Support function to check if all VALUES * (expression) is of the
+  right sign (no signed constants when unsigned partition function)
+
+  SYNOPSIS
+    check_signed_flag()
+    part_info                Partition info object
+
+  RETURN VALUES
+    0                        No errors due to sign errors
+    >0                       Sign error
+*/
+
+int check_signed_flag(partition_info *part_info)
+{
+  int error= 0;
+  uint i= 0;
+  if (part_info->part_type != HASH_PARTITION &&
+      part_info->part_expr->unsigned_flag)
+  {
+    List_iterator<partition_element> part_it(part_info->partitions);
+    do
+    {
+      partition_element *part_elem= part_it++;
+
+      if (part_elem->signed_flag)
+      {
+        my_error(ER_SIGNED_PARTITION_CONSTANT_ERROR, MYF(0));
+        error= ER_SIGNED_PARTITION_CONSTANT_ERROR;
+        break;
+      }
+    } while (++i < part_info->no_parts);
+  }
+  return error;
+}
+
+
 /*
   The function uses a new feature in fix_fields where the flag 
   GET_FIXED_FIELDS_FLAG is set for all fields in the item tree.
@@ -802,10 +838,11 @@ static bool handle_list_of_fields(List_iterator<char> it,
   SYNOPSIS
     fix_fields_part_func()
     thd                  The thread object
-    tables               A list of one table, the partitioned table
     func_expr            The item tree reference of the partition function
+    table                The table object
     part_info            Reference to partitioning data structure
     sub_part             Is the table subpartitioned as well
+    set_up_fields        Flag if we are to set-up field arrays
 
   RETURN VALUE
     TRUE                 An error occurred, something was wrong with the
@@ -828,26 +865,54 @@ static bool handle_list_of_fields(List_iterator<char> it,
     on the field object.
 */
 
-static bool fix_fields_part_func(THD *thd, TABLE_LIST *tables,
-                                 Item* func_expr, partition_info *part_info,
-                                 bool is_sub_part)
+bool fix_fields_part_func(THD *thd, Item* func_expr, TABLE *table,
+                          bool is_sub_part, bool is_field_to_be_setup)
 {
+  partition_info *part_info= table->part_info;
+  uint dir_length, home_dir_length;
   bool result= TRUE;
-  TABLE *table= tables->table;
+  TABLE_LIST tables;
   TABLE_LIST *save_table_list, *save_first_table, *save_last_table;
   int error;
   Name_resolution_context *context;
   const char *save_where;
+  char* db_name;
+  char db_name_string[FN_REFLEN];
   DBUG_ENTER("fix_fields_part_func");
 
+  if (part_info->fixed)
+  {
+    if (!(is_sub_part || (error= check_signed_flag(part_info))))
+      result= FALSE;
+    goto end;
+  }
+
+  /*
+    Set-up the TABLE_LIST object to be a list with a single table
+    Set the object to zero to create NULL pointers and set alias
+    and real name to table name and get database name from file name.
+  */
+
+  bzero((void*)&tables, sizeof(TABLE_LIST));
+  tables.alias= tables.table_name= (char*) table->s->table_name.str;
+  tables.table= table;
+  tables.next_local= 0;
+  tables.next_name_resolution_table= 0;
+  strmov(db_name_string, table->s->normalized_path.str);
+  dir_length= dirname_length(db_name_string);
+  db_name_string[dir_length - 1]= 0;
+  home_dir_length= dirname_length(db_name_string);
+  db_name= &db_name_string[home_dir_length];
+  tables.db= db_name;
+
   context= thd->lex->current_context();
   table->map= 1; //To ensure correct calculation of const item
   table->get_fields_in_item_tree= TRUE;
   save_table_list= context->table_list;
   save_first_table= context->first_name_resolution_table;
   save_last_table= context->last_name_resolution_table;
-  context->table_list= tables;
-  context->first_name_resolution_table= tables;
+  context->table_list= &tables;
+  context->first_name_resolution_table= &tables;
   context->last_name_resolution_table= NULL;
   func_expr->walk(&Item::change_context_processor, (byte*) context);
   save_where= thd->where;
@@ -859,6 +924,7 @@ static bool fix_fields_part_func(THD *thd, TABLE_LIST *tables,
   if (unlikely(error))
   {
     DBUG_PRINT("info", ("Field in partition function not part of table"));
+    if (is_field_to_be_setup)
       clear_field_flag(table);
     goto end;
   }
@@ -869,7 +935,13 @@ static bool fix_fields_part_func(THD *thd, TABLE_LIST *tables,
     clear_field_flag(table);
     goto end;
   }
+  if ((!is_sub_part) && (error= check_signed_flag(part_info)))
+    goto end;
+  result= FALSE;
+  if (is_field_to_be_setup)
     result= set_up_field_array(table, is_sub_part);
+  if (!is_sub_part)
+    part_info->fixed= TRUE;
 end:
   table->get_fields_in_item_tree= FALSE;
   table->map= 0; //Restore old value
@@ -1303,7 +1375,6 @@ static uint32 get_part_id_from_linear_hash(longlong hash_value, uint mask,
   SYNOPSIS
     fix_partition_func()
     thd                  The thread object
-    name                 The name of the partitioned table
     table                TABLE object for which partition fields are set-up
     create_table_ind     Indicator of whether openfrm was called as part of
                          CREATE or ALTER TABLE
@@ -1325,15 +1396,10 @@ NOTES
     of an error that is not discovered until here.
 */
 
-bool fix_partition_func(THD *thd, const char* name, TABLE *table,
+bool fix_partition_func(THD *thd, TABLE *table,
                         bool is_create_table_ind)
 {
   bool result= TRUE;
-  uint dir_length, home_dir_length;
-  TABLE_LIST tables;
-  TABLE_SHARE *share= table->s;
-  char db_name_string[FN_REFLEN];
-  char* db_name;
   partition_info *part_info= table->part_info;
   ulong save_set_query_id= thd->set_query_id;
   Item *thd_free_list= thd->free_list;
@@ -1345,23 +1411,6 @@ bool fix_partition_func(THD *thd, const char* name, TABLE *table,
   }
   thd->set_query_id= 0;
   DBUG_PRINT("info", ("thd->set_query_id: %d", thd->set_query_id));
-  /*
-    Set-up the TABLE_LIST object to be a list with a single table
-    Set the object to zero to create NULL pointers and set alias
-    and real name to table name and get database name from file name.
-  */
-
-  bzero((void*)&tables, sizeof(TABLE_LIST));
-  tables.alias= tables.table_name= (char*) share->table_name.str;
-  tables.table= table;
-  tables.next_local= 0;
-  tables.next_name_resolution_table= 0;
-  strmov(db_name_string, name);
-  dir_length= dirname_length(db_name_string);
-  db_name_string[dir_length - 1]= 0;
-  home_dir_length= dirname_length(db_name_string);
-  db_name= &db_name_string[home_dir_length];
-  tables.db= db_name;
 
   if (!is_create_table_ind ||
        thd->lex->sql_command != SQLCOM_CREATE_TABLE)
@@ -1391,9 +1440,8 @@ bool fix_partition_func(THD *thd, const char* name, TABLE *table,
     }
     else
     {
-      if (unlikely(fix_fields_part_func(thd, &tables,
-                                        part_info->subpart_expr, part_info,
-                                        TRUE)))
+      if (unlikely(fix_fields_part_func(thd, part_info->subpart_expr,
+                                        table, TRUE, TRUE)))
         goto end;
       if (unlikely(part_info->subpart_expr->result_type() != INT_RESULT))
       {
@@ -1420,8 +1468,8 @@ bool fix_partition_func(THD *thd, const char* name, TABLE *table,
     }
     else
     {
-      if (unlikely(fix_fields_part_func(thd, &tables, part_info->part_expr,
-                                        part_info, FALSE)))
+      if (unlikely(fix_fields_part_func(thd, part_info->part_expr,
+                                        table, FALSE, TRUE)))
         goto end;
       if (unlikely(part_info->part_expr->result_type() != INT_RESULT))
       {
@@ -1434,6 +1482,9 @@ bool fix_partition_func(THD *thd, const char* name, TABLE *table,
   else
   {
     const char *error_str;
+    if (unlikely(fix_fields_part_func(thd, part_info->part_expr,
+                                      table, FALSE, TRUE)))
+      goto end;
     if (part_info->part_type == RANGE_PARTITION)
     {
       error_str= partition_keywords[PKW_RANGE].str; 
@@ -1457,9 +1508,6 @@ bool fix_partition_func(THD *thd, const char* name, TABLE *table,
       my_error(ER_PARTITIONS_MUST_BE_DEFINED_ERROR, MYF(0), error_str);
       goto end;
     }
-    if (unlikely(fix_fields_part_func(thd, &tables, part_info->part_expr,
-                                      part_info, FALSE)))
-      goto end;
     if (unlikely(part_info->part_expr->result_type() != INT_RESULT))
     {
       my_error(ER_PARTITION_FUNC_NOT_ALLOWED_ERROR, MYF(0), part_str);
@@ -1479,7 +1527,6 @@ bool fix_partition_func(THD *thd, const char* name, TABLE *table,
   check_range_capable_PF(table);
   set_up_partition_key_maps(table, part_info);
   set_up_partition_func_pointers(part_info);
-  part_info->fixed= TRUE;
   set_up_range_analysis_info(part_info);
   result= FALSE;
 end:
@@ -1563,6 +1610,7 @@ static int add_hash(File fptr)
 
 static int add_partition(File fptr)
 {
+  char buff[22];
   strxmov(buff, part_str, space_str, NullS);
   return add_string(fptr, buff);
 }
@@ -1576,6 +1624,7 @@ static int add_subpartition(File fptr)
 
 static int add_partition_by(File fptr)
 {
+  char buff[22];
   strxmov(buff, part_str, space_str, by_str, space_str, NullS);
   return add_string(fptr, buff);
 }
@@ -1616,10 +1665,18 @@ static int add_key_partition(File fptr, List<char> field_list)
 
 static int add_int(File fptr, longlong number)
 {
+  char buff[32];
   llstr(number, buff);
   return add_string(fptr, buff);
 }
 
+static int add_uint(File fptr, ulonglong number)
+{
+  char buff[32];
+  longlong2str(number, buff, 10);
+  return add_string(fptr, buff);
+}
+
 static int add_keyword_string(File fptr, const char *keyword,
                               bool should_use_quotes, 
                               const char *keystr)
@@ -1688,7 +1745,9 @@ static int add_partition_values(File fptr, partition_info *part_info,
   if (part_info->part_type == RANGE_PARTITION)
   {
     err+= add_string(fptr, "VALUES LESS THAN ");
-    if (p_elem->range_value != LONGLONG_MAX)
+    if (p_elem->signed_flag)
+    {
+      if (!p_elem->max_value)
       {
         err+= add_begin_parenthesis(fptr);
         err+= add_int(fptr, p_elem->range_value);
@@ -1697,12 +1756,25 @@ static int add_partition_values(File fptr, partition_info *part_info,
       else
         err+= add_string(fptr, partition_keywords[PKW_MAXVALUE].str);
     }
+    else
+    {
+      if (!p_elem->max_value)
+      {
+        err+= add_begin_parenthesis(fptr);
+        err+= add_uint(fptr, (ulonglong)p_elem->range_value);
+        err+= add_end_parenthesis(fptr);
+      }
+      else
+        err+= add_string(fptr, partition_keywords[PKW_MAXVALUE].str);
+    }
+  }
   else if (part_info->part_type == LIST_PARTITION)
   {
     uint i;
-    List_iterator<longlong> list_val_it(p_elem->list_val_list);
+    List_iterator<part_elem_value> list_val_it(p_elem->list_val_list);
     err+= add_string(fptr, "VALUES IN ");
     uint no_items= p_elem->list_val_list.elements;
+
     err+= add_begin_parenthesis(fptr);
     if (p_elem->has_null_value)
     {
@@ -1717,8 +1789,12 @@ static int add_partition_values(File fptr, partition_info *part_info,
     i= 0;
     do
     {
-      longlong *list_value= list_val_it++;
-      err+= add_int(fptr, *list_value);
+      part_elem_value *list_value= list_val_it++;
+
+      if (!list_value->unsigned_flag)
+        err+= add_int(fptr, list_value->value);
+      else
+        err+= add_uint(fptr, list_value->value);
       if (i != (no_items-1))
         err+= add_comma(fptr);
     } while (++i < no_items);
@@ -2299,10 +2375,10 @@ int get_partition_id_list(partition_info *part_info,
 {
   LIST_PART_ENTRY *list_array= part_info->list_array;
   int list_index;
-  longlong list_value;
   int min_list_index= 0;
   int max_list_index= part_info->no_list_values - 1;
   longlong part_func_value= part_val_int(part_info->part_expr);
+  bool unsigned_flag= part_info->part_expr->unsigned_flag;
   DBUG_ENTER("get_partition_id_list");
 
   if (part_info->part_expr->null_value)
@@ -2315,6 +2391,9 @@ int get_partition_id_list(partition_info *part_info,
     goto notfound;
   }
   *func_value= part_func_value;
+  if (!unsigned_flag)
+  {
+    longlong list_value;
     while (max_list_index >= min_list_index)
     {
       list_index= (max_list_index + min_list_index) >> 1;
@@ -2333,6 +2412,30 @@ int get_partition_id_list(partition_info *part_info,
         DBUG_RETURN(0);
       }
     }
+  }
+  else
+  {
+    ulonglong ulist_value;
+    ulonglong upart_func_value= part_func_value;
+    while (max_list_index >= min_list_index)
+    {
+      list_index= (max_list_index + min_list_index) >> 1;
+      ulist_value= list_array[list_index].list_value;
+      if (ulist_value < upart_func_value)
+        min_list_index= list_index + 1;
+      else if (ulist_value > upart_func_value)
+      {
+        if (!list_index)
+          goto notfound;
+        max_list_index= list_index - 1;
+      }
+      else
+      {
+        *part_id= (uint32)list_array[list_index].partition_id;
+        DBUG_RETURN(0);
+      }
+    }
+  }
 notfound:
   *part_id= 0;
   DBUG_RETURN(HA_ERR_NO_PARTITION_FOUND);
@@ -2381,13 +2484,17 @@ uint32 get_list_array_idx_for_endpoint(partition_info *part_info,
                                        bool left_endpoint,
                                        bool include_endpoint)
 {
-  DBUG_ENTER("get_list_array_idx_for_endpoint");
   LIST_PART_ENTRY *list_array= part_info->list_array;
   uint list_index;
-  longlong list_value;
   uint min_list_index= 0, max_list_index= part_info->no_list_values - 1;
   /* Get the partitioning function value for the endpoint */
   longlong part_func_value= part_val_int(part_info->part_expr);
+  bool unsigned_flag= part_info->part_expr->unsigned_flag;
+  DBUG_ENTER("get_list_array_idx_for_endpoint");
+
+  if (!unsigned_flag)
+  {
+    longlong list_value;
     while (max_list_index >= min_list_index)
     {
       list_index= (max_list_index + min_list_index) >> 1;
@@ -2397,7 +2504,7 @@ uint32 get_list_array_idx_for_endpoint(partition_info *part_info,
       else if (list_value > part_func_value)
       {
         if (!list_index)
-        goto notfound;
+          goto notfound_signed;
         max_list_index= list_index - 1;
       }
       else 
@@ -2405,10 +2512,37 @@ uint32 get_list_array_idx_for_endpoint(partition_info *part_info,
         DBUG_RETURN(list_index + test(left_endpoint ^ include_endpoint));
       }
     }
-notfound:
+  notfound_signed:
     if (list_value < part_func_value)
       list_index++;
     DBUG_RETURN(list_index);
+  }
+  else
+  {
+    ulonglong upart_func_value= part_func_value;
+    ulonglong ulist_value;
+    while (max_list_index >= min_list_index)
+    {
+      list_index= (max_list_index + min_list_index) >> 1;
+      ulist_value= list_array[list_index].list_value;
+      if (ulist_value < upart_func_value)
+        min_list_index= list_index + 1;
+      else if (ulist_value > upart_func_value)
+      {
+        if (!list_index)
+          goto notfound_unsigned;
+        max_list_index= list_index - 1;
+      }
+      else 
+      {
+        DBUG_RETURN(list_index + test(left_endpoint ^ include_endpoint));
+      }
+    }
+  notfound_unsigned:
+    if (ulist_value < upart_func_value)
+      list_index++;
+    DBUG_RETURN(list_index);
+  }
 }
 
 
@@ -2422,6 +2556,7 @@ int get_partition_id_range(partition_info *part_info,
   uint max_part_id= max_partition;
   uint loc_part_id;
   longlong part_func_value= part_val_int(part_info->part_expr);
+  bool unsigned_flag= part_info->part_expr->unsigned_flag;
   DBUG_ENTER("get_partition_id_int_range");
 
   if (part_info->part_expr->null_value)
@@ -2429,6 +2564,9 @@ int get_partition_id_range(partition_info *part_info,
     *part_id= 0;
     DBUG_RETURN(0);
   }
+  *func_value= part_func_value;
+  if (!unsigned_flag)
+  {
     while (max_part_id > min_part_id)
     {
       loc_part_id= (max_part_id + min_part_id + 1) >> 1;
@@ -2442,11 +2580,36 @@ int get_partition_id_range(partition_info *part_info,
       if (loc_part_id != max_partition)
         loc_part_id++;
     *part_id= (uint32)loc_part_id;
-  *func_value= part_func_value;
     if (loc_part_id == max_partition)
       if (range_array[loc_part_id] != LONGLONG_MAX)
         if (part_func_value >= range_array[loc_part_id])
           DBUG_RETURN(HA_ERR_NO_PARTITION_FOUND);
+  }
+  else
+  {
+    ulonglong upart_func_value= part_func_value;
+    ulonglong urange_value;
+    while (max_part_id > min_part_id)
+    {
+      loc_part_id= (max_part_id + min_part_id + 1) >> 1;
+      urange_value= range_array[loc_part_id];
+      if (urange_value <= upart_func_value)
+        min_part_id= loc_part_id + 1;
+      else
+        max_part_id= loc_part_id - 1;
+    }
+    loc_part_id= max_part_id;
+    urange_value= range_array[loc_part_id];
+    if (upart_func_value >= urange_value)
+      if (loc_part_id != max_partition)
+        loc_part_id++;
+    *part_id= (uint32)loc_part_id;
+    urange_value= range_array[loc_part_id];
+    if (loc_part_id == max_partition)
+      if (urange_value != ULONGLONG_MAX)
+        if (upart_func_value >= urange_value)
+          DBUG_RETURN(HA_ERR_NO_PARTITION_FOUND);
+  }
   DBUG_RETURN(0);
 }
 
@@ -2496,13 +2659,16 @@ uint32 get_partition_id_range_for_endpoint(partition_info *part_info,
                                            bool left_endpoint,
                                            bool include_endpoint)
 {
-  DBUG_ENTER("get_partition_id_range_for_endpoint");
   longlong *range_array= part_info->range_int_array;
   uint max_partition= part_info->no_parts - 1;
   uint min_part_id= 0, max_part_id= max_partition, loc_part_id;
   /* Get the partitioning function value for the endpoint */
   longlong part_func_value= part_val_int(part_info->part_expr);
+  bool unsigned_flag= part_info->part_expr->unsigned_flag;
+  DBUG_ENTER("get_partition_id_range_for_endpoint");
 
+  if (!unsigned_flag)
+  {
     while (max_part_id > min_part_id)
     {
       loc_part_id= (max_part_id + min_part_id + 1) >> 1;
@@ -2530,6 +2696,43 @@ uint32 get_partition_id_range_for_endpoint(partition_info *part_info,
         loc_part_id++;
       loc_part_id++;
     }
+  }
+  else
+  {
+    ulonglong upart_func_value= part_func_value;
+    ulonglong urange_value;
+    while (max_part_id > min_part_id)
+    {
+      loc_part_id= (max_part_id + min_part_id + 1) >> 1;
+      urange_value= range_array[loc_part_id];
+      if (urange_value <= upart_func_value)
+        min_part_id= loc_part_id + 1;
+      else
+        max_part_id= loc_part_id - 1;
+    }
+    loc_part_id= max_part_id;
+    urange_value= range_array[loc_part_id+1];
+    if (loc_part_id < max_partition && 
+        upart_func_value >= urange_value)
+    {
+       loc_part_id++;
+    }
+    if (left_endpoint)
+    {
+      urange_value= range_array[loc_part_id];
+      if (upart_func_value >= urange_value)
+        loc_part_id++;
+    }
+    else 
+    {
+      urange_value= range_array[loc_part_id];
+      if (upart_func_value == urange_value)
+        loc_part_id += test(include_endpoint);
+      else if (upart_func_value > urange_value)
+        loc_part_id++;
+      loc_part_id++;
+    }
+  }
   DBUG_RETURN(loc_part_id);
 }
 
@@ -4497,7 +4700,7 @@ the generated partition syntax in a correct manner.
         tab_part_info->use_default_subpartitions= FALSE;
         tab_part_info->use_default_no_subpartitions= FALSE;
       }
-      if (tab_part_info->check_partition_info((handlerton**)NULL,
+      if (tab_part_info->check_partition_info(thd, (handlerton**)NULL,
                                               table->file, ULL(0)))
       {
         DBUG_RETURN(TRUE);

sql/sql_partition.h

@@ -65,9 +65,8 @@ int get_part_for_delete(const byte *buf, const byte *rec0,
                         partition_info *part_info, uint32 *part_id);
 void prune_partition_set(const TABLE *table, part_id_range *part_spec);
 bool check_partition_info(partition_info *part_info,handlerton **eng_type,
-                          handler *file, ulonglong max_rows);
-bool fix_partition_func(THD *thd, const char *name, TABLE *table,
-                        bool create_table_ind);
+                          TABLE *table, handler *file, ulonglong max_rows);
+bool fix_partition_func(THD *thd, TABLE *table, bool create_table_ind);
 char *generate_partition_syntax(partition_info *part_info,
                                 uint *buf_length, bool use_sql_alloc,
                                 bool write_all);
@@ -91,6 +90,8 @@ uint32 get_list_array_idx_for_endpoint(partition_info *part_info,
 uint32 get_partition_id_range_for_endpoint(partition_info *part_info,
                                            bool left_endpoint,
                                            bool include_endpoint);
+bool fix_fields_part_func(THD *thd, Item* func_expr, TABLE *table,
+                          bool is_sub_part, bool is_field_to_be_setup);
 
 /*
   A "Get next" function for partition iterator.

sql/sql_show.cc

@@ -3851,8 +3851,8 @@ static int get_schema_partitions_record(THD *thd, struct st_table_list *tables,
       }
       else if (part_info->part_type == LIST_PARTITION)
       {
-        List_iterator<longlong> list_val_it(part_elem->list_val_list);
-        longlong *list_value;
+        List_iterator<part_elem_value> list_val_it(part_elem->list_val_list);
+        part_elem_value *list_value;
         uint no_items= part_elem->list_val_list.elements;
         tmp_str.length(0);
         tmp_res.length(0);
@@ -3864,7 +3864,10 @@ static int get_schema_partitions_record(THD *thd, struct st_table_list *tables,
         }
         while ((list_value= list_val_it++))
         {
-          tmp_res.set(*list_value, cs);
+          if (!list_value->unsigned_flag)
+            tmp_res.set(list_value->value, cs);
+          else
+            tmp_res.set((ulonglong)list_value->value, cs);
           tmp_str.append(tmp_res);
           if (--no_items != 0)
             tmp_str.append(",");

sql/sql_table.cc

@@ -2141,7 +2141,7 @@ bool mysql_create_table_internal(THD *thd,
     }
     DBUG_PRINT("info", ("db_type = %d",
                          ha_legacy_type(part_info->default_engine_type)));
-    if (part_info->check_partition_info( &engine_type, file,
+    if (part_info->check_partition_info(thd, &engine_type, file,
                                         create_info->max_rows))
       goto err;
     part_info->default_engine_type= engine_type;

sql/sql_yacc.yy

@@ -42,12 +42,6 @@
 #include <myisam.h>
 #include <myisammrg.h>
 
-typedef struct p_elem_val
-{ 
-  longlong value;
-  bool null_value;
-} part_elem_value;
-
 int yylex(void *yylval, void *yythd);
 
 const LEX_STRING null_lex_str={0,0};
@@ -3712,6 +3706,7 @@ part_func_max:
             YYABORT;
           }
           lex->part_info->defined_max_value= TRUE;
+          lex->part_info->curr_part_elem->max_value= TRUE;
           lex->part_info->curr_part_elem->range_value= LONGLONG_MAX;
         }
         | part_range_func
@@ -3727,7 +3722,10 @@ part_func_max:
 part_range_func:
         '(' part_bit_expr ')' 
         {
-          Lex->part_info->curr_part_elem->range_value= $2->value;
+          partition_info *part_info= Lex->part_info;
+          if (!($2->unsigned_flag))
+            part_info->curr_part_elem->signed_flag= TRUE;
+          part_info->curr_part_elem->range_value= $2->value;
         }
         ;
 
@@ -3740,9 +3738,12 @@ part_list_item:
         part_bit_expr
         {
           part_elem_value *value_ptr= $1;
+          partition_info *part_info= Lex->part_info;
+          if (!value_ptr->unsigned_flag)
+            part_info->curr_part_elem->signed_flag= TRUE;
           if (!value_ptr->null_value &&
-             Lex->part_info->curr_part_elem->
-              list_val_list.push_back((longlong*) &value_ptr->value))
+             part_info->curr_part_elem->
+              list_val_list.push_back(value_ptr))
           {
             mem_alloc_error(sizeof(part_elem_value));
             YYABORT;
@@ -3783,6 +3784,10 @@ part_bit_expr:
           }
           thd->where= save_where;
           value_ptr->value= part_expr->val_int();
+          value_ptr->unsigned_flag= TRUE;
+          if (!part_expr->unsigned_flag &&
+              value_ptr->value < 0)
+            value_ptr->unsigned_flag= FALSE;
           if ((value_ptr->null_value= part_expr->null_value))
           {
             if (Lex->part_info->curr_part_elem->has_null_value)

sql/table.cc

@@ -1488,8 +1488,7 @@ int open_table_from_share(THD *thd, TABLE_SHARE *share, const char *alias,
       Fix the partition functions and ensure they are not constant
       functions
     */
-    if (fix_partition_func(thd, share->normalized_path.str, outparam,
-                           is_create_table))
+    if (fix_partition_func(thd, outparam, is_create_table))
       goto err;
   }
 #endif