Two IntervalMatch 's in one qvw

[Anonymous]

Hi

I have 2 Fact tables, one of which is planned work hours and the other actual work hours.

From this I need to know how many people were planned to be onsite in 15 minute intervals, and the same for actual.

The IntervalMatch() function sorts this fine........

................ but I also need to be able to slice this against various dimensions such as Department.

In the attached qvw [which has a sample Inline Load] you will see that this works fine as long as the Department is selected from both Fact tables.  However it is painful to have to select the Department twice.

I tried to concatenate the pairs of Fact and Interval tables and renaming both Department A & B as Department, but I could not get that working.

Does anybody have any suggestions ?

Note:  In my real data I have a fair few million rows.

Many Thanks,     Bill

[MarcoWedel]

Hi Bill,

you could add some triggers and actions which replicate the selection state e.g. from field [Department A] to [Department B] like this:

=GetFieldSelections([Department A])

but personally I think that's your second best option.

I would prefer integrating your two fact tables into one and add one field that distincts the initial source table (A/B) which then could be used as additional dimension in your charts.

regards

Marco

[Anonymous]

Marco

Many thanks for your reply.

I completely agree with you that integrating the two fact tables into one would be good, I just can't get it work though, any suggestion to make it would work would be gratefully received, there is a sample qvw attached to the original post.

Best Regards,     Bill

[MarcoWedel · Accepted solution]

Hi Bill,

sorry for not getting the point in the first place.

I tried for another solution and came up with this:

I converted your data model

into this

To do so, I skipped your interval match code and combined the FactA and FactB tables using this script:

tabFactTotal:
LOAD
  [Count A] as Count,
  [Employee A] as Employee,
  [Department A] as Department,
  [Start Date A] as [Start Date],
  [Start Time A] as [Start Time],
  [Start DateTime A] as [Start DateTime],
  [End Date A] as [End Date],
  [End Time A] as [End Time],
  [End DateTime A] as [End DateTime],
  'A' as selector
Resident FactA;

LOAD
  [Count B] as Count,
  [Employee B] as Employee,
  [Department B] as Department,
  [Start Date B] as [Start Date],
  [Start Time B] as [Start Time],
  [Start DateTime B] as [Start DateTime],
  [End Date B] as [End Date],
  [End Time B] as [End Time],
  [End DateTime B] as [End DateTime],
  'B' as selector
Resident FactB;

TempInterval15MinsMatch:
INTERVALMATCH (DateMin15)
LOAD
[Start DateTime],
[End DateTime]
Resident tabFactTotal;

Interval15MinsMatch:
load
  date(floor([Start DateTime]  )) as  [Start Date] ,
  time(frac([Start DateTime]  )) as  [Start Time] ,
  date(floor([End DateTime]  )) as  [End Date] ,
  time(frac([End DateTime]  )) as  [End Time] ,
  DateMin15
Resident TempInterval15MinsMatch;

drop tables TempInterval15MinsMatch, FactA, FactB;
drop field  [Start DateTime] ;
drop field  [End DateTime] ;

The result looks like this:

The department selection now is possible with only one field.

Your chart expressions had to be extended with a set expression, e.g.:

sum ( [Count A] )

became

sum ({$<selector={'A'}>} [Count] )

hope this helps

regards

Marco

[Anonymous]

Marco

Many thanks for that cunning suggestion, it looks promising and I am optimistic.

I just need to check it out.

Best Regards,     Bill

[Anonymous]

Marco

Wow !!!!   Many, many thanks.

I have incorporated your solution into my real qvw with my real data and it is working perfectly.

Your cunning bit was to concatenate the 2 Fact tables before the IntervalMatch.

Best Regards,     Bill

[MarcoWedel]

glad I could help

regards

Marco