value-expr CASE_SENSITIVE { MATCHING     } match-expr
                              { NOT MATCHING }

    Specifies a relational clause that tests for substring matches.
    By using wildcard characters, you can specify the position of the
    substring. This operation is not case sensitive.

    The product using CDO evaluates a MATCHING clause as true if
    match expression, the second expression, matches a substring of
    the first expression. Specify the match expression in quotation
    marks.

    When you use the keyword NOT, the product using CDO evaluates
    the clause as true if the second expression does not match a
    substring of the first value expression.