clickhouse jdbc报错：Too many partitions for single INSERT block (more than 100)

通过clickhouse官方jdbc写入时报错：Too many partitions for single INSERT block (more than 100)
解决：
调整了建表时PARTITION BY分区字段，因为是从hive里读的，所以直接用了hive分区的值: PARTITION BY dt，之前用的add_time字段做分区：toYYYYMMDD(toDateTime(add_time, 'Asia/Shanghai'))，这个字段在同一批次写入里包括大于100个分区值，clickhouse认为这样会存在性能问题，抛出异常：

The limit is controlled by 'max_partitions_per_insert_block' setting. Large number of
partitions is a common misconception. It will lead to severe negative performance impact,
including slow server startup, slow INSERT queries and slow SELECT queries.
Recommended total number of partitions for a table is under 1000..10000. Please note,
that partitioning is not intended to speed up SELECT queries (ORDER BY key is sufficient
to make range queries fast). Partitions are intended for data manipulation (DROPPARTITION, etc). (version 20.2.1.2183 (official build))

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