@Override
    public String getPrimaryKey() {
        return primaryKey;
    }
clickHouse update operations is heavy, it will takes precedence over all others operation to execute, so it has a
poor performance. It is more suitable for batch scenes but not streaming scenes where operations are performed
frequently.
inlong-sort/sort-common/src/main/java/org/apache/inlong/sort/protocol/node/load/ClickHouseLoadNode.java