Using Arrays to Calculate Previous and Next Values
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Is there a way I can use Clickhouse (Arrays?) to calculate sequential values that are dependent on previously calculated values.
For e.g.
On day 1, I start with 0 -- consume 5 -- Add 100 -- ending up with = 0 - 5 + 100 = 95
My day2, starts with what I ended up on day 1 which is 95 -- again consume 10 -- add 5 -- ending up with 95-10+5=90 (which will be the start for day3)
Given
ConsumeArray [5,10,25]
AddArray [100,5,10]
Calculate EndingPosition and (= StartingPosition for Next day)
-
Day1 Day2 Day3
--------------------------------------------------------------------
StartingPosition (a) = Previous Ending Position | 0 95 90 Calculate
Consumed (b) | 5 10 25
Added (c) | 100 5 10
EdingPosition (d) = a-b+c | 95 90 75 Calculate
clickhouse
edited Nov 26 '18 at 7:40
Micha Wiedenmann
10.6k1364106
asked Nov 23 '18 at 14:02
calgscalgs
83
add a comment |
Is there a way I can use Clickhouse (Arrays?) to calculate sequential values that are dependent on previously calculated values.
For e.g.
On day 1, I start with 0 -- consume 5 -- Add 100 -- ending up with = 0 - 5 + 100 = 95
My day2, starts with what I ended up on day 1 which is 95 -- again consume 10 -- add 5 -- ending up with 95-10+5=90 (which will be the start for day3)
Given
ConsumeArray [5,10,25]
AddArray [100,5,10]
Calculate EndingPosition and (= StartingPosition for Next day)
-
Day1 Day2 Day3
--------------------------------------------------------------------
StartingPosition (a) = Previous Ending Position | 0 95 90 Calculate
Consumed (b) | 5 10 25
Added (c) | 100 5 10
EdingPosition (d) = a-b+c | 95 90 75 Calculate
clickhouse
edited Nov 26 '18 at 7:40
Micha Wiedenmann
10.6k1364106
asked Nov 23 '18 at 14:02
calgscalgs
83
add a comment |
Is there a way I can use Clickhouse (Arrays?) to calculate sequential values that are dependent on previously calculated values.
For e.g.
On day 1, I start with 0 -- consume 5 -- Add 100 -- ending up with = 0 - 5 + 100 = 95
My day2, starts with what I ended up on day 1 which is 95 -- again consume 10 -- add 5 -- ending up with 95-10+5=90 (which will be the start for day3)
Given
ConsumeArray [5,10,25]
AddArray [100,5,10]
Calculate EndingPosition and (= StartingPosition for Next day)
-
Day1 Day2 Day3
--------------------------------------------------------------------
StartingPosition (a) = Previous Ending Position | 0 95 90 Calculate
Consumed (b) | 5 10 25
Added (c) | 100 5 10
EdingPosition (d) = a-b+c | 95 90 75 Calculate
clickhouse
edited Nov 26 '18 at 7:40
Micha Wiedenmann
10.6k1364106
asked Nov 23 '18 at 14:02
calgscalgs
83
Is there a way I can use Clickhouse (Arrays?) to calculate sequential values that are dependent on previously calculated values.
For e.g.
On day 1, I start with 0 -- consume 5 -- Add 100 -- ending up with = 0 - 5 + 100 = 95
My day2, starts with what I ended up on day 1 which is 95 -- again consume 10 -- add 5 -- ending up with 95-10+5=90 (which will be the start for day3)
Given
ConsumeArray [5,10,25]
AddArray [100,5,10]
Calculate EndingPosition and (= StartingPosition for Next day)
-
Day1 Day2 Day3
--------------------------------------------------------------------
StartingPosition (a) = Previous Ending Position | 0 95 90 Calculate
Consumed (b) | 5 10 25
Added (c) | 100 5 10
EdingPosition (d) = a-b+c | 95 90 75 Calculate
clickhouse
clickhouse
edited Nov 26 '18 at 7:40
Micha Wiedenmann
10.6k1364106
asked Nov 23 '18 at 14:02
calgscalgs
83
edited Nov 26 '18 at 7:40
Micha Wiedenmann
10.6k1364106
asked Nov 23 '18 at 14:02
calgscalgs
83
edited Nov 26 '18 at 7:40
Micha Wiedenmann
10.6k1364106
edited Nov 26 '18 at 7:40
Micha Wiedenmann
10.6k1364106
edited Nov 26 '18 at 7:40
Micha Wiedenmann
10.6k1364106
10.6k1364106
asked Nov 23 '18 at 14:02
calgscalgs
83
asked Nov 23 '18 at 14:02
calgscalgs
83
asked Nov 23 '18 at 14:02
calgscalgs
83
83
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
Just finish all the add/consume operations first and then do an accumulation.
WITH [5,10,25] as ConsumeArray,
[100,5,10] as AddArray
SELECT
arrayCumSum(arrayMap((c, a) -> a - c, ConsumeArray, AddArray));
answered Nov 23 '18 at 19:20
AmosAmos
1,80831029
add a comment |
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1 Answer
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
Just finish all the add/consume operations first and then do an accumulation.
WITH [5,10,25] as ConsumeArray,
[100,5,10] as AddArray
SELECT
arrayCumSum(arrayMap((c, a) -> a - c, ConsumeArray, AddArray));
answered Nov 23 '18 at 19:20
AmosAmos
1,80831029
add a comment |
Just finish all the add/consume operations first and then do an accumulation.
WITH [5,10,25] as ConsumeArray,
[100,5,10] as AddArray
SELECT
arrayCumSum(arrayMap((c, a) -> a - c, ConsumeArray, AddArray));
answered Nov 23 '18 at 19:20
AmosAmos
1,80831029
add a comment |
Just finish all the add/consume operations first and then do an accumulation.
WITH [5,10,25] as ConsumeArray,
[100,5,10] as AddArray
SELECT
arrayCumSum(arrayMap((c, a) -> a - c, ConsumeArray, AddArray));
answered Nov 23 '18 at 19:20
AmosAmos
1,80831029
Just finish all the add/consume operations first and then do an accumulation.
WITH [5,10,25] as ConsumeArray,
[100,5,10] as AddArray
SELECT
arrayCumSum(arrayMap((c, a) -> a - c, ConsumeArray, AddArray));
answered Nov 23 '18 at 19:20
AmosAmos
1,80831029
edited Nov 23 '18 at 19:26
answered Nov 23 '18 at 19:20
AmosAmos
1,80831029
answered Nov 23 '18 at 19:20
AmosAmos
1,80831029
answered Nov 23 '18 at 19:20
AmosAmos
1,80831029
1,80831029
add a comment |
add a comment |
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