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Indexes
If a data set has an
index on the variable or variables named in the BY statement that
accompanies the MERGE statement, then you do not need to sort that
data set. For
more information, see “Understanding SAS Indexes” in Chapter 26 of SAS Language Reference: Concepts.
SAS date and time formats and informats
The examples in this
section read Time as a character variable, and they read Date with
a SAS date informat. You could read Time using special SAS time informats. For more information
about SAS date and time informats, see “Working with SAS Dates and Times” in Chapter 7 of SAS Language Reference: Concepts.
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