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DROP CONVERSION -- remove a conversion
DROP CONVERSION name [ CASCADE | RESTRICT ]
DROP CONVERSION removes a previously
defined conversion. To be able to drop a conversion, you must own
The name of the conversion. The conversion name may be
These key words do not have any effect, since there are
no dependencies on conversions.
To drop the conversion named myname:
DROP CONVERSION myname;
There is no DROP CONVERSION statement
in the SQL standard.