Commit 03ecb6bd authored by unknown's avatar unknown
Browse files

Merge mysql.com:/home/timka/mysql/src/5.0-virgin 

into mysql.com:/home/timka/mysql/src/5.0-dbg
parents 380c64b1 db93db85

mysql-test/r/select.result

+23 −0
Original line number Diff line number Diff line
@@ -2423,3 +2423,26 @@ SELECT * FROM t1 WHERE city LIKE '%london%' AND city='London'; 
city

London

DROP TABLE t1;

create table t1 (a int(11) unsigned, b int(11) unsigned);

insert into t1 values (1,0), (1,1), (1,2);

select a-b  from t1 order by 1;

a-b

0

1

18446744073709551615

select a-b , (a-b < 0)  from t1 order by 1;

a-b	(a-b < 0)

0	0

1	0

18446744073709551615	0

select a-b as d, (a-b >= 0), b from t1 group by b having d >= 0;

d	(a-b >= 0)	b

1	1	0

0	1	1

18446744073709551615	1	2

select cast((a - b) as unsigned) from t1 order by 1;

cast((a - b) as unsigned)

0

1

18446744073709551615

drop table t1;

mysql-test/t/select.test

+11 −0
Original line number Diff line number Diff line
@@ -2004,3 +2004,14 @@ SELECT * FROM t1 WHERE city LIKE '%london%' AND city='London'; 


DROP TABLE t1;



#

# Bug#7425 inconsistent sort order on unsigned columns result of substraction

#



create table t1 (a int(11) unsigned, b int(11) unsigned);

insert into t1 values (1,0), (1,1), (1,2);

select a-b  from t1 order by 1;

select a-b , (a-b < 0)  from t1 order by 1;

select a-b as d, (a-b >= 0), b from t1 group by b having d >= 0;

select cast((a - b) as unsigned) from t1 order by 1;

drop table t1;

sql/filesort.cc

+8 −2
Original line number Diff line number Diff line
@@ -694,12 +694,18 @@ static void make_sortkey(register SORTPARAM *param, 
	  to[3]= (uchar) (value >> 32);

	  to[2]= (uchar) (value >> 40);

	  to[1]= (uchar) (value >> 48);

	  to[0]= (uchar) (value >> 56) ^ 128;	// Fix sign

          if (item->unsigned_flag)                    /* Fix sign */

            to[0]= (uchar) (value >> 56);

          else

            to[0]= (uchar) (value >> 56) ^ 128;	/* Reverse signbit */

#else

	  to[3]= (uchar) value;

	  to[2]= (uchar) (value >> 8);

	  to[1]= (uchar) (value >> 16);

	  to[0]= (uchar) (value >> 24) ^ 128;	// Fix sign

          if (item->unsigned_flag)                    /* Fix sign */

            to[0]= (uchar) (value >> 24);

          else

            to[0]= (uchar) (value >> 24) ^ 128;	/* Reverse signbit */

#endif

	  break;

	}

sql/item.cc

+1 −0
Original line number Diff line number Diff line
@@ -3717,6 +3717,7 @@ void Item_ref::set_properties() 
    split_sum_func() doesn't try to change the reference.

  */

  with_sum_func= (*ref)->with_sum_func;

  unsigned_flag= (*ref)->unsigned_flag;

  if ((*ref)->type() == FIELD_ITEM)

    alias_name_used= ((Item_ident *) (*ref))->alias_name_used;

  else