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Advance SAS Interview Question - Find the second max value for each of the category using PROC SQL 

Learnerea
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29 сен 2024

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Комментарии : 29   
@SuperMrGilles
@SuperMrGilles 9 дней назад
Does this also work if you want to find 3rd max value for each category?
@Lavin13
@Lavin13 8 месяцев назад
Your expanation of the code is not clear.
@learnerea
@learnerea 8 месяцев назад
You can share your doubts if any
@vinitvalvi
@vinitvalvi 10 месяцев назад
Other than Proc SQL we can use First. for Ex : proc sort data=LA.DIWALI_SPENDS; by city descending tran_amt; run; Data Final; set LA.DIWALI_SPENDS; by city descending tran_amt; if first.city then n=1; else n+1; run; Data Final1; set Final; where n=2; run;
@learnerea
@learnerea 10 месяцев назад
yes, this can also be used.
@Anj1907
@Anj1907 8 месяцев назад
/******For finding out the 1st ,2nd ,3rd and so on maximum value*****/ %Macro __findout(value=); proc sort data = sashelp.class out=class(where=(~missing(height))); by descending Height; run; Data class1; Set class; by descending height ; m+1; if m = "&value." ; run; %Mend; %__findout(value=2); If you want to know the first maximum value ,just modify the value as 1 . Likewise ,for checking the maximum value by group , just add by variable in by statement and also use first.variable(if first.variable then m =1 else m+1;)
@teddygamingytff6739
@teddygamingytff6739 Месяц назад
Proc sql; Select * from ( SELECT city, tranamt dense_rank ( ) over (partition by city order by tranamt desc) r from table_name) where r=2; Quit;
@solmanraj3140
@solmanraj3140 Месяц назад
Rank,dense_rank,row_number wont work in sas.
@Milind12000
@Milind12000 2 года назад
Proc sql; Select * from diwali_spends as x where 2=(select count(tran_amt) from diwali_spends as y where x.tran_amt
@KIRITO-xo6qh
@KIRITO-xo6qh Год назад
Hello @Milind Patil I ran your code and from my understanding it can be used for finding Nth value not only for 2 highest. But I find it a little difficult to understand it so if you can explain it it will be a huge help. Thank you.
@ankababupodili
@ankababupodili Год назад
sir is not workout when ever tran_amt having two same obs values ( ex = 1000 ,1000 ) ; do u have sollution for u?
@akshayaseetharaman5687
@akshayaseetharaman5687 11 месяцев назад
Can we use Proc sql; Create table old as Select a.city, Transamnt From spend A Where transamnt not in (select City ,max(transamnt) as transamnt) From spends Group by 1); Quit; Proc sql; Create table new as Select a.city, , max(transamnt) From old A Group by 1; Quit;
@learnerea
@learnerea 11 месяцев назад
lets understand this - for example rs 10 was the maximum amount for delhi but second maxium for noida.. considering this query it will remove from noida as well when you use the exclusion logic not in. to understand better, what I mean, use the file - github.com/LEARNEREA/Excel_Files/blob/master/diwali_spends_manipulated.xlsx and run both of the codes.. i.e. the one you see in the video and the one you have created and see the difference
@ajaykushwaha4233
@ajaykushwaha4233 2 года назад
Thank you, please create more interview videos
@prashanthdeva2770
@prashanthdeva2770 Год назад
Proc sort data=second max value ; out= sorteddata; by descending trnsamnt: Proc print data=sorteddata (firstobs=2 );run; Or Data secondvalue; Set sorteddata; If _N_=2 then output; Run;
@sudheerupputuri932
@sudheerupputuri932 Год назад
Correct
@nipunshetty9640
@nipunshetty9640 Год назад
very simple correct
@ajaykushwaha4233
@ajaykushwaha4233 Год назад
None of them will work if data is same.
@parvsharma8767
@parvsharma8767 Год назад
proc sql; select city, max(sale) from sales where sale not in ( select max(sale) from sales group by city) group by city; quit; sir I used this and got the correct output, is this also valid?
@learnerea
@learnerea Год назад
Good point, for this purpose only I created this video with inner join. let me try to explain you - for example rs 10 was the maximum amount for delhi but second maxium for noida.. considering this query it will remove from noida as well when you use the exclusion logic not in. to understand better, what I mean, use the file - github.com/LEARNEREA/Excel_Files/blob/master/diwali_spends_manipulated.xlsx and run both of the codes.. i.e. the one you see in the video and the one you have created and see the difference
@parvsharma8767
@parvsharma8767 Год назад
@@learnereaI got your point and thanks for the response, I will be going through the shared content!
@nayakbibhuti085
@nayakbibhuti085 Год назад
Can't use rank function inside proc sql
@learnerea
@learnerea Год назад
you can try row number partition by, if you are working in SQL but not in proc sql for sure
@RatneshKumar-bc1jg
@RatneshKumar-bc1jg 2 года назад
Please share something on ETL with SAS
@learnerea
@learnerea 2 года назад
Will do so soon
@Shradha_K
@Shradha_K 10 месяцев назад
Can we use "Largest" function from data step.
@learnerea
@learnerea 9 месяцев назад
worth trying
@sakshiverma9058
@sakshiverma9058 2 года назад
Very nice
@learnerea
@learnerea 2 года назад
Thank you Sakshi
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