The SASECRSP Interface Engine

To set up the libref to access all keys, no key options such as PERMNO=, TICKER=, or GVKEY= are specified in the LIBNAME statement and no INSET= option is used. Any of these options cause the SASECRSP engine to limit access to specified keys or specified insets. When no such options are specified, the SASECRSP engine correctly defaults to selecting all keys in the database. Other LIBNAME statement options, such as the RANGE= option, can still be used normally to limit the time span of the data—in other words, to define the date range of observations.

This example does not use key-specifying options. This forces the engine to default to all PERMNOs in the monthly STK database. The range that is specified in the LIBNAME statement behaves normally, and data are limited to the first two months of 1995.

title2 'Define a range inside the data range ';
title3 'My range is ( 19950101-19950228 )';

libname _all_ clear;
libname testit2 sasecrsp "%sysget(CRSP_MSTK)"
        setid=20
        range='19950101-19950228';
data a;
   set testit2.ask(obs=30);
run;

proc print data=a;
run;

The result is shown in Output 38.2.1.