how can get the first and last observations in a dataset using Proc SQl?

4 Answers   Satyam,

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What makes sas stand out to be the best over other data analytics tools?

0 Answers  

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Please, anyone, let me know the style or an example of using 'by='/'by' variable of a PDV(Program Data Vector)

3 Answers   Verinon Technology Solutions,

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Which date functions advances a date time or date/time value by agiven interval?

3 Answers  

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what is AE onset date and what is RDS?

4 Answers   Accenture,

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If you?re not wanting any SAS output from a data step, how would you code the data statement to prevent SAS from producing a set?

1 Answers  

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Difference between nodup and nodupkey options?

0 Answers  

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What is the pound sign used for the DATA _NULL_?

14 Answers  

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How do you add a prefix to some or all variables in a dataset using a SAS macro?

2 Answers  

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Which statement does not perform automatic conversions in comparisons?

0 Answers  

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You need to perform an analysis on a massive dataset by groups, but are unable to sort the data due to memory constraint. How would you accomplish the task?

2 Answers  

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what is the difference between DUPKEY and NODUPKEY???

4 Answers   Cognizant, EXL,

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