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Merging SAS Data Sets Merging with a BY statement enables you to match observations according to the values of the BY variables that you specify. Before you can perform a match-merge, all data sets must be sorted by the variables that you want to use for the merge. In order to understand match-merging, you must understand three key concepts: BY variable is a variable named in a BY statement. BY value is the value of a BY variable. BY group is the set of all observations with the same value for the BY variable (if there is only one BY variable).

If you use more than one variable in a BY statement, then a BY group is the set of observations with a unique combination of values for those variables. In discussions of match-merging, BY groups commonly span more than one data set.

For example, the director of a small repertory theater company, the Little Theater, maintains company records in two SAS data sets, COMPANY and FINANCE.

Merging SAS Data Sets Merging with a BY statement enables you to match observations according to the values of the BY variables that you specify. Before you can perform a match-merge, all data sets must be sorted by the variables that you want to use for the merge. In order to understand match-merging, you must understand three key concepts: BY variable is a variable named in a BY statement. Potty Racers 3 New Space Missions Hacked Pics.