This article explains the data summarization by rows, columns and how you can use Predicates in PROC SQL to perform comparisons between two conditions or expressions. Summarizing Data The SQL procedure is a wonderful tool for summarizing (or aggregating) data. It provides several useful summary (or aggregate) functions to help perform calculations, descriptive statistics, and…
SQL Set operators are conceptually derived from the mathematical set principle. The three fundamental set operators are UNION, INTERSECT, and EXCEPT. All three, with variations (in particular, OUTER UNION) and options, could be carried out in PROC SQL for combining data from a number of tables in the SQL procedure. Joins VS SQL SET Operators…
PROC SQL in SASis a Procedure that combines the functionality of DATA and PROC steps into a single step. PROC SQL can perform sorting of data, creating summaries of data, subsetting, joining (merge), concatenation of datasets, create new or calculated variables, printing the results or create a new table or view all in a single step.
