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xyxu
Quartz | Level 8

Is the following procedure legitimate? Please note that variable month is generated by the procedure itself. I can run it without any error reported, but not sure if the results are perfectly what I want.

 

proc sql;
	create table want as 
	select name, intnx("month", date, 0, 'e') as month format yymmdd10.,  mean(var) as var_ave
	from have
	group by name, month 
	order by name, month;
quit;

 

5 REPLIES 5
Shmuel
Garnet | Level 18

You need use the descriptive word "calculated", Try

proc sql;
	create table want as 
	select name, intnx("month", date, 0, 'e') as month format yymmdd10.,  mean(var) as var_ave
	from have
	group by name, calculated month 
	order by name, calculated  month;
quit;
xyxu
Quartz | Level 8
It seems that the results do not change after adding it?
Shmuel
Garnet | Level 18
Please post sample of your input and its output to demonstrate where it should differ
SASKiwi
PROC Star

I suspect use of the keyword - calculated - is optional in your example as both versions work without error.

ChrisNZ
Tourmaline | Level 20

Since variable MONTH doesn't exist anywhere else, the keyword calculated can be omitted: it is obvious which MONTH you are referring to. Both queries yield the same result.

 

This calculated keyword is a powerful addition to ANSI SQL made by SAS.

 

Now if only SAS added other   useful     language    extensions     to SQL...

 

 

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