hive 交换 序列化格式
    English Answer.
    How to Convert Hive Serdes.
    Apache Hive SerDes (serializers and deserializers) are used to convert data from its raw format into a format that can be processed by Hive. There are many different SerDes available, each with its own advantages and disadvantages. In some cases, it may be necessary to convert data from one SerDe format to another.
    There are two main ways to convert SerDes in Hive:
    1. Use the `serde` property: The `serde` property can be used to specify the SerDe that should be used to read or write data. For example, the following statement uses the `OrcSerde` to read data from an ORC file:
    CREATE EXTERNAL TABLE my_table (。
      id INT,。
      name STRING.
    )。
    ROW FORMAT SERDE 'org.apache.hadoop.hive.OrcSerde'。
    STORED AS INPUTFORMAT 'org.apache.hadoop.hive.OrcInputFormat'。
    OUTPUTFORMAT 'org.apache.hadoop.hive.OrcOutputFormat';
    2. Use the `serde_type` property: The `serde_type` property can be used to specify the type of data that is being processed. This property is used by Hive to determine which SerDe should be used. For example, the following statement uses the `serde_type` property to specify that the data is in ORC format:
hive 字符串转数组    CREATE EXTERNAL TABLE my_table (。
      id INT,。
      name STRING.
    )。
    ROW FORMAT SERDE serde_type='org.apache.hadoop.hive.OrcSerde';
    Which SerDe should I use?
    The best SerDe to use will depend on the specific requirements of your application. However, there are some general guidelines that can be followed:
    If you need to read and write data in a compressed format, then you should use a SerDe that supports compression, such as the ORC SerDe.
    If you need to read and write data in a columnar format, then you should use a SerDe that supports columnar storage, such as the Parquet SerDe.
    If you need to read and write data in a flexible format, then you should use a SerDe that supports custom data types, such as the Avro SerDe.
    How do I convert data from one SerDe format to another?
    To convert data from one SerDe format to another, you can use the `ALTER TABLE` statement. The following statement converts the data in the `my_table` table from ORC format to Parquet format:
    ALTER TABLE my_table SET SERDE 'org.apache.hadoop.hive.ql.io.parquet.ParquetSerde';
    中文回答：
    如何转换 Hive SerDe.
    Apache Hive SerDe（序列化器和反序列化器）用于将数据从其原始格式转换为 Hive 可以处理的格式。有许多不同的 SerDe 可用，每个 SerDe 都有其优点和缺点。在某些情况下，可能需要将数据从一种 SerDe 格式转换为另一种格式。
    在 Hive 中转换 SerDe 有两种主要方法：

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