#181 StringCol(char_binary=True) breaks if DBMS!=MySQL

[Anonymous]

StringCol(char_binary=True) is required by MySQL to
allow case-sensitive comparisons for that column.
However, for instance for SQLite this is not required.
In the latter case "char_binary=True" should be
ignored, but instead an exception is trown:
ValueError: SQLite does not support binary character
columns

[Oleg Broytman]

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"char_binary" was a somwhat experimental feature that I now
very much recommend againts. "char_binary" in MySQL doesn't
mean "case sensitive", it means "non-locale aware", which is
very much different thing.