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查询Tags标签: Deduplication,共有 2条记录-
Flink基础(132):FLINK-SQL语法 (26) DQL(18) OPERATIONS(15)Deduplication 去重
Deduplication Batch Streaming Deduplication removes rows that duplicate over a set of columns, keeping only the first one or the last one. In some cases, the upstream ETL jobs are not end-to-end exactly-once; this may result in duplicate records in t…
2021/8/28 19:08:12 人评论 次浏览 -
Flink基础(132):FLINK-SQL语法 (26) DQL(18) OPERATIONS(15)Deduplication 去重
Deduplication Batch Streaming Deduplication removes rows that duplicate over a set of columns, keeping only the first one or the last one. In some cases, the upstream ETL jobs are not end-to-end exactly-once; this may result in duplicate records in t…
2021/8/28 19:08:12 人评论 次浏览