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mlm155
Obsidian | Level 7

I tried a data step with two where statements and realised that only the second where condition is affecting the output - see sample code below:

 

data result_2where_conditions;
set class_birthdate;
where Registration = 'C';

where Age = 12;

run;

 

Can somebody shed some light on why this happens?

Thanks heaps.

 



1 ACCEPTED SOLUTION
4 REPLIES 4
Astounding
Opal | Level 21
Alternatively, add the keyword SAME to the second WHERE statement:

where same and age=12;
Kurt_Bremser
Super User

While this is valid and works, I would not even teach it, as sooner or later someone comes up with

where condition1;
/* 1000 lines of data step code */
where same and condition2;
/* another 1000 lines of data step code */
where same and condition3;

which is horrible to debug and maintain.

Astounding
Opal | Level 21
I agree, for simple sets of conditions. For complex sets of conditions, it can be easier to read the "same and" version.

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