Solomon Rutzky wraps up his series on Unicode and regular identifiers:
The question that I’m trying to answer is: what are the valid “letters” and “decimal numbers” from other national scripts?
I tried using the online research tool “UnicodeSet”, but that gave slightly different results compared (using the “alphabetic” and “numeric_type = decimal” properties) to what I discovered SQL Server actually accepts.
I then loaded the actual Unicode 3.2 data files only to find that the number of characters having either the “alphabetic” or “numeric_type = decimal” properties was different than both the online search and what SQL Server actually accepts.
And so…..
Click through to find the real Unicode killer.