The following SAS functionality for SAS indexes is not
supported:
-
You cannot create an index with
a DATA step or a PROC step.
-
The CONTENTS procedure does not
display index information.
-
For the SET and MODIFY statements,
the KEY= option, which enables you to specify an index to retrieve
particular observations, is not supported. The POINT= option, which
enables you to specify a variable whose value is the observation number
to be read, and UNIQUE= option, which causes a KEY= search always
to begin at the top of the index for the data file, are also not supported
for SET and MODIFY statements.
-
The MODIFY statement in the DATASETS
procedure is not supported, which means that for a SAS data set you
cannot submit the INDEX CENTILES statement to request that centiles
be refreshed or change how often centiles are refreshed.
-
For a SAS data set, the fast-append
method to append to an indexed data set is not supported.