If used, the Option Compare statement must appear in a module before any procedures.
The Option Compare statement specifies the string comparison method (Binary, Text, or Database) for a module. If a module doesn't include an Option Compare statement, the default text comparison method is Binary.
Option Compare Binary results in string comparisons based on a sort order derived from the internal binary representations of the characters. In Microsoft Windows, sort order is determined by the code page. A typical binary sort order is shown in the following example:
A < B < E < Z < a < b < e < z < À < Ê < Ø < à < ê < ø
Option Compare Text results in string comparisons based on a case-insensitive text sort order determined by your system's locale. When the same characters are sorted using Option Compare Text, the following text sort order is produced:
(A=a) < ( À=à) < (B=b) < (E=e) < (Ê=ê) < (Z=z) < (Ø=ø)
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