问题
I have below query which gives me data with three columns - type, amount and total for previous week using week_number column.
select type,
case
WHEN (type = 'PROC1' AND contractdomicilecode = 'UIT') THEN 450
WHEN (type = 'PROC1' AND contractdomicilecode = 'KJH') THEN 900
WHEN (type = 'PROC2' AND contractdomicilecode = 'LOP') THEN 8840
WHEN (type = 'PROC2' AND contractdomicilecode = 'AWE') THEN 1490
WHEN (type = 'PROC3' AND contractdomicilecode = 'MNH') THEN 1600
WHEN (type = 'PROC3' AND contractdomicilecode = 'LKP') THEN 1900
END as amount,
total
from xyz.orders pa
join
(select clientid as clientid, max(version) as version
from xyz.orders where consumerid IN (select distinct entity_id from abc.items
where week_number = extract(week from current_date) - 1
and item_type like '%Ionize - Data%' )
and createdfor ='BLOCK'
and holder='RELAY_FUTURES'
group by clientid) pb on
pa.clientid = pb.clientid and pa.version = pb.version;
Below is the output I get back as of now with above query:
type amount total
---------------------------
PROC1 450 1768
PROC1 900 123
PROC1 450 456
PROC2 8840 99897
PROC2 1490 2223
PROC2 8840 9876
PROC3 1900 23456
PROC3 1600 12498
PROC3 1600 28756
Problem Statement
Now I am trying to figure out a way by which I can get data for past 6 weeks (not including current week). Basically I want to get amount, total for each type for past 6 weeks as shown below.
week type amount total
----------------------------------
46 PROC1 450 1768
46 PROC1 900 123
46 PROC1 450 456
46 PROC2 8840 99897
46 PROC2 1490 2223
46 PROC2 8840 9876
46 PROC3 1900 23456
46 PROC3 1600 12498
46 PROC3 1600 28756
45 PROC1 450 1768
45 PROC1 900 123
45 PROC1 450 456
45 PROC2 8840 99897
45 PROC2 1490 2223
45 PROC2 8840 9876
45 PROC3 1900 23456
45 PROC3 1600 12498
45 PROC3 1600 28756
44 PROC1 450 1768
44 PROC1 900 123
44 PROC1 450 456
44 PROC2 8840 99897
44 PROC2 1490 2223
44 PROC2 8840 9876
44 PROC3 1900 23456
44 PROC3 1600 12498
44 PROC3 1600 28756
43 PROC1 450 1768
43 PROC1 900 123
43 PROC1 450 456
43 PROC2 8840 99897
43 PROC2 1490 2223
43 PROC2 8840 9876
43 PROC3 1900 23456
43 PROC3 1600 12498
43 PROC3 1600 28756
42 PROC1 450 1768
42 PROC1 900 123
42 PROC1 450 456
42 PROC2 8840 99897
42 PROC2 1490 2223
42 PROC2 8840 9876
42 PROC3 1900 23456
42 PROC3 1600 12498
42 PROC3 1600 28756
41 PROC1 450 1768
41 PROC1 900 123
41 PROC1 450 456
41 PROC2 8840 99897
41 PROC2 1490 2223
41 PROC2 8840 9876
41 PROC3 1900 23456
41 PROC3 1600 12498
41 PROC3 1600 28756
Is this possible to do by any chance?
回答1:
You may try adding the following code to your query, right after the first select in line 1, if the column current_date is present in the xyz.orders table:
extract(week from current_date) as week,
To obtain the past number of weeks (6 in your case), a filter will be used after the line of from xyz.orders pa:
where datediff(week, extract(week, current_date)-6, extract(week, current_date)+1) = 6
The filter might need to be slightly adjusted, but when you see the output you should be able to find what needs to be adjusted.
Some more info in the DATEDIFF function used in the filter above from the MS docs might be a helpful reference.
docs.microsoft.com
With the above changes, here is the updated query and comments as to the specifics added from your original code.
select
extract(week from current_date) as week, -- added code
type,
case
WHEN (type = 'PROC1' AND contractdomicilecode = 'UIT') THEN 450
WHEN (type = 'PROC1' AND contractdomicilecode = 'KJH') THEN 900
WHEN (type = 'PROC2' AND contractdomicilecode = 'LOP') THEN 8840
WHEN (type = 'PROC2' AND contractdomicilecode = 'AWE') THEN 1490
WHEN (type = 'PROC3' AND contractdomicilecode = 'MNH') THEN 1600
WHEN (type = 'PROC3' AND contractdomicilecode = 'LKP') THEN 1900
END as amount,
total
from xyz.orders pa
where datediff(week, extract(week, current_date)-6, extract(week, current_date)+1) = 6 -- added code
join
(select clientid as clientid, max(version) as version
from xyz.orders where consumerid IN (select distinct entity_id from abc.items
where week_number = extract(week from current_date) - 1
and item_type like '%Ionize - Data%' )
and createdfor ='BLOCK'
and holder='RELAY_FUTURES'
group by clientid) pb on
pa.clientid = pb.clientid and pa.version = pb.version;
来源：https://stackoverflow.com/questions/64897019/how-to-get-data-for-the-past-x-weeks-for-each-type