DROP CONVERSION removes a previously defined conversion. To be able to drop a conversion, you must own the conversion.
Do not throw an error if the conversion does not exist. A notice is issued in this case.
The name of the conversion. The conversion name can be schema-qualified.
These key words do not have any effect, since there are no dependencies on conversions.
There is no DROP CONVERSION statement in the SQL standard, but a DROP TRANSLATION statement that goes along with the CREATE TRANSLATION statement that is similar to the CREATE CONVERSION statement in PostgreSQL.
If you see anything in the documentation that is not correct, does not match your experience with the particular feature or requires further clarification, please use this form to report a documentation issue.