Passing down the SAS function STRIP to the Oracle database as Oracle's
TRIM function causes a performance enhancement.  To obtain the benefit
of this performance enhancement, SAS will now pass it's STRIP function
to the database to process.  However, here is a slight incompatibility
between these functions when the argument passed in is '', ' ' or any
blank padded string and the "=" operator is used.  SAS evaluates
STRIP('     ')='', STRIP('        ')=' ' and STRIP('    ') IS NULL
as TRUE whereas, Oracle only evaluates STRIP('     ') IS NULL as
TRUE and the other ones as FALSE.  Therefore, try to avoid using "="
comparisons but instead use IS NULL.

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