I have two tables A and B.
Table A has Id, Item_Name, price_start_date, new_price_end_date
Table B has Covers, Date.
I want to create a code to add all the covers in Table A which lie in between Price_start_date and new_price_end_date (that is sum of covers between the dates in Table B).
I wrote a code to
Proc SQL;
create table work.covers_before_total as
Select a.*, Sum(Case When a.Price_start_Date <= a.NEW_Price_End_Date and a.Price_start_Date <= b.date and a.NEW_Price_End_Date >= b.date then b.Covers Else 0 END) as covers
from work.covers_before a,work.covers_measurement_model b
group by a.id
Run;
But the sum gives out 0 for some reason.
Is there also a better way of doing it?
Your code (once modified to meet what proc sql expects) appears to work correctly. I ran:
Proc SQL;
create table work.covers_before_total as
Select a.*, Sum(Case When a.Price_start_Date <= a.NEW_Price_End_Date and
a.Price_start_Date <= b.date and
a.NEW_Price_End_Date >= b.date then b.Covers Else 0 END) as covers
from work.covers_before a,work.covers_measurement_model b
group by a.id
;
quit;
Can't help further unless/until you provide some example data for the two datasets, and the result you expect.
Art, CEO, AnalystFinder.com
Your code (once modified to meet what proc sql expects) appears to work correctly. I ran:
Proc SQL;
create table work.covers_before_total as
Select a.*, Sum(Case When a.Price_start_Date <= a.NEW_Price_End_Date and
a.Price_start_Date <= b.date and
a.NEW_Price_End_Date >= b.date then b.Covers Else 0 END) as covers
from work.covers_before a,work.covers_measurement_model b
group by a.id
;
quit;
Can't help further unless/until you provide some example data for the two datasets, and the result you expect.
Art, CEO, AnalystFinder.com
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