Test case for bug #807

mysql-test/r/group_by.result

@@ -585,4 +585,15 @@ select id, sum(qty) as sqty, count(qty) as cqty from t1 group by id having sum(q
 id	sqty	cqty
 1	5	2
 2	9	2
+select count(*), case interval(qty,2,3,4,5,6,7,8) when -1 then NULL when 0 then "zero" when 1 then "one" when 2 then "two" end as category from t1 group by category;
+count(*)	category
+2	NULL
+1	one
+1	two
+select count(*), interval(qty,2,3,4,5,6,7,8) as category from t1 group by category;
+count(*)	category
+1	1
+1	2
+1	3
+1	4
 drop table t1;

mysql-test/t/group_by.test

@@ -420,4 +420,6 @@ select id, sum(qty) as sqty, count(qty) as cqty from t1 group by id having sum(q
 select id, sum(qty) as sqty from t1 group by id having sqty>2 and count(qty)>1;
 select id, sum(qty) as sqty, count(qty) as cqty from t1 group by id having sqty>2 and cqty>1;
 select id, sum(qty) as sqty, count(qty) as cqty from t1 group by id having sum(qty)>2 and count(qty)>1;
+select count(*), case interval(qty,2,3,4,5,6,7,8) when -1 then NULL when 0 then "zero" when 1 then "one" when 2 then "two" end as category from t1 group by category;
+select count(*), interval(qty,2,3,4,5,6,7,8) as category from t1 group by category;
 drop table t1;