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数据湖计算 DLC ALTER TABLE ADD PARTITION FIELD

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ALTER TABLE table_name ADD PARTITION partition_column | hidden_partition_spec [AS alias]hidden_partition_spec: Supported transformations are: years(ts): partition by year months(ts): partition by month days(ts。

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一、说明

·支持内核：Presto、SparkSQL。

·适用表范围：原生 Iceberg 表、外部表。

·用途：为数据表新增单个分区字段。

二、参数说明

·table_name：需要的表名字。

·partition_column: 分区列。

·alias: 分区列增加的别名。

三、示例

ALTER TABLE prod.db.sample ADD PARTITION FIELD bucket(16, id)ALTER TABLE prod.db.sample ADD PARTITION FIELD truncate(data, 4)ALTER TABLE prod.db.sample ADD PARTITION FIELD years(ts)– use optional AS keyword to specify a custom name for the partition field ALTER TABLE prod.db.sample ADD PARTITION FIELD bucket(16, id) AS shard

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