Function mdb_drop 

pub unsafe extern "C" fn mdb_drop(
    txn: *mut MDB_txn,
    dbi: MDB_dbi,
    del: c_int,
) -> c_int

Empty or delete+close a database.

See #mdb_dbi_close() for restrictions about closing the DB handle.

Arguments

• txn (direction in) - A transaction handle returned by #mdb_txn_begin()
• dbi (direction in) - A database handle returned by #mdb_dbi_open()
• del (direction in) - 0 to empty the DB, 1 to delete it from the environment and close the DB handle.

Returns

A non-zero error value on failure and 0 on success.