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Sas programmer Interview Questions

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whats is the difference between merge and join .

4 Answers

said merge requires sorting of data and join doesnt .

Both are horizontal combination of data set values. where, merge needs the data set to be sorted before combining. And join combines data set values based on Cartesian product.

Using join you can split lines (duplicate). For example, you have AETERM in Adverse Event, where AETERM = "headtoothache". It's 2 independent DECOD, and if you need to control it by MedDRA dictionary you need to split lines where AETERM in both lines equal to 'headtoothache' but AEDECOD in the first line equal to 'HEADACHE' and 'TOOTHACHE' in the second line.

Swap two numbers without using a third variable

2 Answers

How do you add 2 missing values so that the result is zero?

2 Answers

1)If we are comparing two consecutive month's data, how to write all the data that has changed from last month 2) FIND, INDEX, SUBSTR functions 3) Proc means 4) Date functions 5) If we are appending, data is added horizontally or vertically ?? same for merging ??

1 Answer

Given a real time scenario,how do u work upon it to resolve the issue

1 Answer

Basics of SAS (functions)

1 Answer

gave me a case study to solve. it was how many footballs are sold in united states in a month.

1 Answer

Is that ok for the relocation for you?

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Where did you learn SAS?

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what are the proc that that you know?

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