@Override
    public Optional<String> defaultDriverName() {
        return Optional.of("org.postgresql.Driver");
    }
copy from flink-jdbc
modify upsert statement implement
inlong-sort/sort-flink/sort-flink-v1.13/sort-connectors/jdbc/src/main/java/org/apache/inlong/sort/jdbc/dialect/TDSQLPostgresDialect.java