Using PROC SQL to Join Data
The SQL Procedure
Another method that you can use to join
data sets that do not have a common variable is the SQL procedure.
You should already be familiar with using PROC SQL to create a table
from the results of an inner join.
In a PROC SQL step,
you can choose from each input data set only the specific variables
that you want to include in the new data set. The input data sets
do not need to contain a common BY variable, nor do they need to be
sorted or indexed. However, if the lookup table has an index, the
SQL procedure can take advantage of the index to provide faster retrieval
of lookup values.
You can join up to 256 tables by using the SQL procedure, to combine data horizontally from sources that have any ...
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