Improve the speed of many to many sass tabular cube
I have a model that looks like the below image. This example is healthcare, but feel free to sub any other domain (sales, retail, etc.). The basic idea is that there are multiple many-to-many relationships. Every encounter (patient seeing a doctor) can have any number of Diagnosis associated with it, any number of procedures associated with it, and any number of medications associated with it, hence the bridge tables for each. We need a very fast way to calculate how many encounters have x diagnosis and y medication, or z procedure and x medication. I've tried things like:
Count of Encounters:=CALCULATE(
COUNT(EncounterFact[PatientEncounterCSNID]),'Diagnosis Bridge', 'Medication Bridge', 'Procedure Bridge')
But this is very slow. Note that EncounterFact (and therefore every bridge table) is 10's of millions of rows.
I've thought about pre-staging aggregated data, but there are too many possibilities.
How can I model this, or use better DAX to make calculations like the ones above faster?
Thanks! Any advice appreciated!
Note: Compatibility level is 1103
ssas ssas-tabular
asked Nov 13 '18 at 6:50
russdsrussds
51831940
add a comment |
I have a model that looks like the below image. This example is healthcare, but feel free to sub any other domain (sales, retail, etc.). The basic idea is that there are multiple many-to-many relationships. Every encounter (patient seeing a doctor) can have any number of Diagnosis associated with it, any number of procedures associated with it, and any number of medications associated with it, hence the bridge tables for each. We need a very fast way to calculate how many encounters have x diagnosis and y medication, or z procedure and x medication. I've tried things like:
Count of Encounters:=CALCULATE(
COUNT(EncounterFact[PatientEncounterCSNID]),'Diagnosis Bridge', 'Medication Bridge', 'Procedure Bridge')
But this is very slow. Note that EncounterFact (and therefore every bridge table) is 10's of millions of rows.
I've thought about pre-staging aggregated data, but there are too many possibilities.
How can I model this, or use better DAX to make calculations like the ones above faster?
Thanks! Any advice appreciated!
Note: Compatibility level is 1103
ssas ssas-tabular
asked Nov 13 '18 at 6:50
russdsrussds
51831940
add a comment |
I have a model that looks like the below image. This example is healthcare, but feel free to sub any other domain (sales, retail, etc.). The basic idea is that there are multiple many-to-many relationships. Every encounter (patient seeing a doctor) can have any number of Diagnosis associated with it, any number of procedures associated with it, and any number of medications associated with it, hence the bridge tables for each. We need a very fast way to calculate how many encounters have x diagnosis and y medication, or z procedure and x medication. I've tried things like:
Count of Encounters:=CALCULATE(
COUNT(EncounterFact[PatientEncounterCSNID]),'Diagnosis Bridge', 'Medication Bridge', 'Procedure Bridge')
But this is very slow. Note that EncounterFact (and therefore every bridge table) is 10's of millions of rows.
I've thought about pre-staging aggregated data, but there are too many possibilities.
How can I model this, or use better DAX to make calculations like the ones above faster?
Thanks! Any advice appreciated!
Note: Compatibility level is 1103
ssas ssas-tabular
asked Nov 13 '18 at 6:50
russdsrussds
51831940
I have a model that looks like the below image. This example is healthcare, but feel free to sub any other domain (sales, retail, etc.). The basic idea is that there are multiple many-to-many relationships. Every encounter (patient seeing a doctor) can have any number of Diagnosis associated with it, any number of procedures associated with it, and any number of medications associated with it, hence the bridge tables for each. We need a very fast way to calculate how many encounters have x diagnosis and y medication, or z procedure and x medication. I've tried things like:
Count of Encounters:=CALCULATE(
COUNT(EncounterFact[PatientEncounterCSNID]),'Diagnosis Bridge', 'Medication Bridge', 'Procedure Bridge')
But this is very slow. Note that EncounterFact (and therefore every bridge table) is 10's of millions of rows.
I've thought about pre-staging aggregated data, but there are too many possibilities.
How can I model this, or use better DAX to make calculations like the ones above faster?
Thanks! Any advice appreciated!
Note: Compatibility level is 1103
ssas ssas-tabular
ssas ssas-tabular
asked Nov 13 '18 at 6:50
russdsrussds
51831940
asked Nov 13 '18 at 6:50
russdsrussds
51831940
asked Nov 13 '18 at 6:50
russdsrussds
51831940
asked Nov 13 '18 at 6:50
russdsrussds
51831940
asked Nov 13 '18 at 6:50
russdsrussds
51831940
51831940
add a comment |
add a comment |
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