5 Replies Latest reply: Aug 7, 2018 6:11 PM by David Moore

2 date columns, count on hour

I have 2 date columns and need to count using their hour for each, but in the same graph.

For example:

col

Arrive DateLeave Date
12/07/2018 07:0012/07/2018 08:00
12/07/2018 08:0012/07/2018 09:00

I need to count both columns using their hour.

So i want to end up with:

For ArriveFor Leave
hour 7 = 1Hour 7 = 1
hour 8 = 1Hour 8 = 1
Hour 9 = 0Hour 9 = 1

When i try to use =hour(arrivedate) in the dimensions

then add two measures thus:

count(hour(arrivedate)

count(hour(LeaveDate)

it doesn't work.

How can i make this work??

• Re: 2 date columns, count on hour

Hi David,

try this:

=interval(LeaveDate-ArriveDate','h')

compact example:

=interval('2018-01-01 13:00'-'2018-01-01 01:00','h') ->gives you 12.

G.

• Re: 2 date columns, count on hour

Hi,

So I would use #Timestamp() for your Date-Time field to get that interpreted and then wrap that with Hour() to get an hour column and then you can count that?

Somethign like this:

Temp_Data:

LOAD * Inline [

Number, ArriveDate, LeaveDate

1, 12/07/2018 07:00, 12/07/2018 08:00

2, 12/07/2018 08:00, 12/07/2018 09:00

];

Data:

NoConcateNate

Number,

TimeStamp#(ArriveDate,'MM/DD/YYYY HH:mm') As ArriveDate,

Hour(TimeStamp#(ArriveDate,'MM/DD/YYYY HH:mm')) As ArriveHour,

TimeStamp#(LeaveDate,'MM/DD/YYYY HH:mm') As LeaveDate,

Hour(TimeStamp#(LeaveDate,'MM/DD/YYYY HH:mm')) As LeaveHour

Resident Temp_Data;

Drop Table Temp_Data;

Best,

Ali A

• Re: 2 date columns, count on hour

Thanks but I'm not interested in the interval, I'm interested in counting how many dates fall in each hour of the day.so of I have 3 dates around 9:00 that would be a count of 3. If I have 2  dates around 1400, that is a count of 2 and so on...

I need a count like this for each column, shown in a graph. Base on one column is easy, because I can key on the dates from that column, but when it comes to including the other column, graphed into another bar on the same graph, I'm finding very difficult.

• Re: 2 date columns, count on hour

sorry, I was inattentive, I read it again, and understand the problem

I think your data should arrange in other way:

DateTime              | Type

2018-01-01 12:00 | Arrival

2018-01-01 21:00 | Leave

and the hour(DateTime) will be the common dimension, the measure can be count(*) and add dimension Type, to get two line/bar.

G.

• Re: 2 date columns, count on hour

Damn it. I should've seen that. I've un-pvioted it in SQL and it works great now. Then i used set analysis for each BAR to produce the values i was after: