presto-hive/src/main/java/io/prestosql/plugin/hive/HiveMetadata.java/HiveMetadata/dropColumn
class HiveMetadata:    @Override
    public void dropColumn(ConnectorSession session, ConnectorTableHandle tableHandle, ColumnHandle column)
    {
        HiveTableHandle hiveTableHandle = (HiveTableHandle) tableHandle;
        failIfAvroSchemaIsSet(session, hiveTableHandle);
        HiveColumnHandle columnHandle = (HiveColumnHandle) column;

        metastore.dropColumn(new HiveIdentity(session), hiveTableHandle.getSchemaName(), hiveTableHandle.getTableName(), columnHandle.getName());
    }