Merge ibabaev@bk-internal.mysql.com:/home/bk/mysql-5.0

into rurik.mysql.com:/home/igor/mysql-5.0


mysql-test/r/distinct.result:
  Auto merged
mysql-test/t/distinct.test:
  Auto merged
sql/sql_select.cc:
  Auto merged

mysql-test/r/distinct.result

@@ -464,6 +464,14 @@ SELECT DISTINCT html,SUM(rout)/(SUM(rin)+1) as 'prod' FROM t1 GROUP BY rin;
 html	prod
 1	0.0000
 drop table t1;
+create table t1 (id int, dsc varchar(50));
+insert into t1 values (1, "line number one"), (2, "line number two"), (3, "line number three");
+select distinct id, IFNULL(dsc, '-') from t1;
+id	IFNULL(dsc, '-')
+1	line number one
+2	line number two
+3	line number three
+drop table t1;
 CREATE TABLE t1 (a int);
 INSERT INTO t1 VALUES (1),(2),(3),(4),(5);
 SELECT DISTINCT a, 1 FROM t1;