基本上，我有两个表，如下所示：
root
|-- machine_id: string (nullable = true)
|-- time_stamp: double (nullable = true)
scala> containerUsage.printSchema
root
|-- container_id: string (nullable = true)
|-- machine_id: string (nullable = true)
|-- time_stamp: double (nullable = true)
|-- cpu_util_percent: double (nullable = true)
|-- mem_util_percent: double (nullable = true)
|-- cpi: double (nullable = true)
|-- mem_gps: double (nullable = true)
|-- mpki: integer (nullable = true)
|-- net_in: double (nullable = true)
|-- net_out: double (nullable = true)
|-- disk_io_percent: double (nullable = true)
我想从containerUsage中选择列以获取其{machine_id，time_stamp}可以在invalidTime中找到的那些行。
尝试
WHERE containerUsage.machine_id = invalidTime.machine_id AND containerUsage.time_stamp = invalidTime.time_stamp
这会选择可以在invalidTime中找到其time_stamp或在machine_id中找到的行。
我想获取可以在invalidTime中找到{machine_id，time_stamp}组合（仅用于描述而不是形成数组等）的行