@Override
    public Object[] queryMinMax(JdbcConnection jdbc, TableId tableId, String columnName)
            throws SQLException {
        return PgQueryUtils.queryMinMax(jdbc, tableId, columnName);
    }
The splitter to split the table into chunks using primary-key (by default) or a given split key.
inlong-sort/sort-flink/sort-flink-v1.13/sort-connectors/postgres-cdc/src/main/java/org/apache/inlong/sort/cdc/postgres/source/PostgresChunkSplitter.java