Answer Posted / shuai

did you mean the primary key variable in a sas or sql table?

primary key variable is unique, and it is very helpful when
you need to find some information from other related tables
that also contain the same variable.

for example: claim_id could be a primary key variable in
clinical study

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921

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2070

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Mention common programming errors committed in sas ?

1071

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What are the difference between sas functions and procedures?

1077

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1013

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What is SAS?

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4392

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1126

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1074

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1027

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1016

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Did you used proc test? when?

1991

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how to remove duplicates using proc sql?

1102

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