![]() Use SAS functions to manipulate character data, numeric data, and SAS date values. processing to identify where groups begin and end. Use the BY statement to aggregate by subgroups. Define the length of a variable using the LENGTH statement.Īccumulate sub-totals and totals using DATA step statements. Use LABEL and FORMAT statements to modify attributes in a DATA step. Change the names of variables by using the RENAME= data set option. Modify variable attributes using options and statements in the DATA step. Assign a constant date value to a variable. Assign the value of an expression to a variable. Assign a new value to an existing variable. ![]() Create new variables and assign a value. Use assignment statements in the DATA step. Use DO and END statements to execute multiple statements conditionally. Use IF-THEN/ELSE statements to process data conditionally. Remove duplicate observations with the SORT Procedure. Use the SORT Procedure to re-order observations in place or output to a new dataset with the OUT= option. Use the DROP= and KEEP= data set options to specify columns to be processed and/or output. Subset variables to be output by using the DROP and KEEP statements. Use the WHERE statement in the DATA step to select observations to be processed. Use SAS date and time formats to specify how the values are displayed.Ĭontrol which observations and variables in a SAS data set are processed and output. Use SAS informats to read common date and time expressions. Explain how SAS stores date and time values. Use the SAS/ACCESS XLSX engine to read a Microsoft Excel workbook.xlsx file.
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