The background and a solution are in the mailing list:
Problem:
https://sourceforge.net/mailarchive/forum.php?
thread_id=6189855&forum_id=43362
Solution:
https://sourceforge.net/mailarchive/forum.php?
thread_id=6192216&forum_id=43362
In short, the idea is to fall back to treating all input data
as String, which is reasonable for a db layer, IMO.
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Follow-up from mailing list: the problem is that the drive
simply doesn't accept any fields > varchar. Forcing the driver
to read the buffer as a long string, regardless of underlying
mysql type, fixes the problem - one potential solution was
posted to the mail list last week, though it probably need
cleaning up.
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Was fixed 2 months ago in the p1 CVS tree by treating
unknown types as strings (which is what they are at that level,
anyway).