1. row_number() over (partition by uid order by dt 分析: row_number(): 这是一个窗口函数,用于为结果集中的每一行分配一个唯一的序号。默认情况下,这个序号是按照查询结果的顺序来分配的,但你可以通过OVER()子句中的ORDER BY来指定排序方式。 OVER(PARTITION BY uid ORDER BY dt): OVE
精选30+云产品,助力企业轻松上云!>>> 错误日志 Description:Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.Reason: Failed to determine a suitable driv