Google bigquery 集群效率较低，需要通过（例如）选择*将碎片整理到同一个表中 SELECT * FROM `table_name` WHERE EventCategory = "email" Date TIMESTAMP

集群效率较低，需要通过（例如）选择*将碎片整理到同一个表中

SELECT 
  * 
FROM 
  `table_name`   
WHERE
   EventCategory = "email"

Date             TIMESTAMP   NULLABLE
UserId           STRING      NULLABLE
EventCategory    STRING      NULLABLE
EventAction      STRING      NULLABLE
EventLabel       STRING      NULLABLE
EventValue       STRING      NULLABLE

SELECT
  *
FROM
  `table_name`   
WHERE
  EventCategory = "ad"