group by should group null/empty values

[maxd]

Hi,

I think group by should group null/empty values.

How to reproduce:

1. Add points to experiment series:

{"time":1399475640,"country":"RU","users":1}
{"time":1399475641,"country":null,"users":1}
{"time":1399475642,"country":null,"users":1}

2. Check added point use query:

select * from experiment

you should see 3 rows with added points.

3. Try to group them use query:

select country, sum(users) from experiment group by time(1m), country

Now you see:

time	sum	country
1399440000	1	-
1399440000	1	-
1399440000	1	RU

by I expect to see:

time	sum	country
1399440000	2	-
1399440000	1	RU

[jvshahid]

Good call. This is definitely a bug. Moving to 0.6.2