The STARTING WITH conditional expression tests for the presence
    of a specified string at the beginning of a string expression. A
    STARTING WITH conditional expression is true if the second string
    expression begins with the characters specified in the first
    string expression.

    If you precede the STARTING WITH expression by the optional NOT
    qualifier, the condition is true if the first value expression
    does not begin with the characters specified by the second value
    expression.

    The STARTING WITH conditional expression is case-sensitive; it
    considers uppercase and lowercase forms of the same character to
    be different.