ssas - Effecient way to get NonEmpty members -

-



consider dimension_a , dimension_b , measure_amt require first 100 non-empty members cross-join between dimension_a , dimension_b measure_amt. following query works takes lot of time since these dimensions large(from million 20 million)

 set subset(dimension_a.levels(1),0,100)     set x subset(nonemptycrossjoin(a,dimension_b.levels(1)), 0, 100)     select [measures].[measure_amt] on 0 ,     x on 1      my_cube

and clause,

with set subset(dimension_a.levels(1),0,100) set x subset(nonemptycrossjoin(a,dimension_b.levels(1)), 0, 100) select [measures].[measure_amt] on 0 , x on 1  my_cube dimension_c.member_c1

fetching first 100 members of single dimension quick, nonempty function accounts of time. since require first 100 non-empty members , not next subset, there way write better query.

when say, "i require first 100 non-empty members cross-join between dimension_a , dimension_b measure_amt", assume mean want top 100 results, measure_amt not null 2 cross-joined sets.

if so, believe way write query may improve performance.

with      set [x] [dimension_a].levels(1) * [dimension_b].levels(1) select     [measures].[measure_amt] on 0,     subset(         nonempty(             [x]             , [measures].[measure_amt]         )         , 0         , 100     ) on 1      [my_cube]      [dimension_c].[member_c1]




wiki

Comments

Post a Comment

Popular posts from this blog

Asterisk AGI Python Script to Dialplan does not work -

-
i'm stuck project have check database of sip extension incoming caller id , dial sip extension. below receive when run script on asterisk cli. -- registered sip '9125' @ 192.168.1.102:50142 > saved useragent "zoiper rv2.8.40" peer 9125 [2017-08-22 13:53:33] notice[5095]: chan_sip.c:24558 handle_response_peerpoke: peer '9125' reachable. (17ms / 2000ms) == using sip rtp tos bits 184 == using sip rtp cos mark 5 -- executing [0112617769@from-trunk:1] answer("sip/obitrunk1-0000000d", "") in new stack > 0x1ca50d0 -- probation passed - setting rtp source address 192.168.1.98:16834 -- executing [0112617769@from-trunk:2] agi("sip/obitrunk1-0000000d", "test.py") in new stack -- launched agi script /var/lib/asterisk/agi-bin/test.py args: ['/var/lib/asterisk/agi-bin/test.py'] env line: agi_request: test.py env line: agi_channel: sip/obitrunk1-0000000d env line: agi_language: en env line: a
Read more

python - Read npy file directly from S3 StreamingBody -

-
i have many .npy (numpy) , .json files saved in s3, need download , load these files. for json files downloading files , loading dictionary using following code: obj = s3.object(bucket, key) response = obj.get() body = response['body'].read().decode('utf-8') data = json.loads(body) that way avoid writing .json file disk , reading it. now want same .npy files, equivalent? currently downloading file, saving temp file on disk , loading np.load avoid if possible. following https://stackoverflow.com/a/28196540/3509999 : obj = s3.object(bucket, key) io.bytesio(obj.get()["body"].read()) f: # rewind file f.seek(0) arr = np.load(f) wiki
Read more

kotlin - Out-projected type in generic interface prohibits the use of metod with generic parameter -

-
i start using kotlin , defined interface this: interface aadapter<vh : recyclerview.viewholder> { fun oncreateaviewholder(parent: viewgroup): vh fun onbindaviewholder(v: vh, position: int) } and when try use on code: class klasa ( private val adapter: aadapter<*> ) { fun dosth(){ //... val vh = this.adapter.oncreateaviewholder(parent) //on below line error adapter.onbindaviewholder(v, position) //... } } i error out-projected type 'aadapter<*>' prohibits use of 'public abstract fun onbindaviewholder(v: t, position: int): unit i tied add "in" or "out" definition i'm confused. how allow it. replace aadapter<*> aadapter<recyclerview.viewholder> . class klasa ( private val adapter: aadapter<recyclerview.viewholder> ) { // ... because have declared aadapter has type parameter vh type subclass of recyclerview.
Read more