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Searches for a pattern match and returns the position at which the pattern is found. It returns the position at which the string begins. If there is no match, PRXMATCH returns a zero. The /i in the regular expression makes search case-insensitive.How does the prxmatch function in Python work?
If you use regular-expression-id, then the PRXMATCH function searches source with the regular-expression-id that is returned by PRXPARSE, and returns the position at which the string begins. If there is no match, PRXMATCH returns a zero.Can you use prxmatch with a Perl regular expression?
If you use perl-regular-expression, PRXMATCH searches source with the perl-regular-expression , and you do not need to call PRXPARSE. You can use PRXMATCH with a Perl regular expression in a WHERE clause and in PROC SQL.When to use prxmatch in a where clause?
Note: The compile-once behavior occurs when you use PRXMATCH in a DATA step, in a WHERE clause, or in PROC SQL. For all other uses, the perl-regular-expression is recompiled for each call to PRXMATCH.