src/main/java/com/conveyal/gtfs/loader/JdbcTableWriter.java
private static int getRowCount(String tableName, Connection connection) throws SQLException {
        String rowCountSql = String.format("SELECT COUNT(*) FROM %s", tableName);
        LOG.info(rowCountSql);
        // Create statement for counting rows selected
        Statement statement = connection.createStatement();
        ResultSet resultSet = statement.executeQuery(rowCountSql);
        if (resultSet.next()) return resultSet.getInt(1);
        else return 0;
    }
private static int getRowCount(String tableName, Connection connection) throws SQLException {
        String rowCountSql = String.format("SELECT COUNT(*) FROM %s", tableName);
        LOG.info(rowCountSql);
        // Create statement for counting rows selected
        Statement statement = connection.createStatement();
        ResultSet resultSet = statement.executeQuery(rowCountSql);
        if (resultSet.next()) return resultSet.getInt(1);
        else return 0;
    }
Get number of rows for a table. This is currently just used to check the number of entities for the agency table.