code: public static long importCSV(final File file, final Connection conn, final String insertSQL,
              final Try.BiConsumer<? super PreparedStatement, ? super String[], SQLException> stmtSetter) throws UncheckedSQLException, UncheckedIOException {
          return importCSV(file, 0, Long.MAX_VALUE, conn, insertSQL, 200, 0, stmtSetter);
      }
docs: Imports the data from CSV to database.
  
  @param file
  @param conn
  @param insertSQL the column order in the sql should be consistent with the column order in the CSV file.
  @param stmtSetter
  @return