当前日期与前一周之间的 SQL 查询

Question

SELECT sge_job.j_owner AS "Owner"
      ,SUM(sge_job_usage.ju_cpu) AS "CPU Total"
FROM sge_job_usage, sge_job 
GROUP BY j_owner;

这是我当前的 sql 查询，它只是简单地读取 CPU% 和工作所有者，但如果它在当前日期（例如 14 天（2 周）前）之间，我无法仅合并上面的总和。

在sge_job_usage 表中属于两者：

ju_start_time, ju_end_time

任何人都可以帮助我检查它是否在当前日期之间 - 14 天前，然后检查 end_time 日期以查看它是否仍在运行？

Answer that Outputs What I need below:

SELECT sge_job.j_owner AS "Owner"       
,SUM(sge_job_usage.ju_cpu) AS "CPU Total" 
FROM sge_job_usage, sge_job  
WHERE ju_start_time BETWEEN LOCALTIMESTAMP - INTERVAL '1 week' AND LOCALTIMESTAMP 
GROUP BY j_owner;

Answer 1

ADC 语法对 PostgreSQL 无效。

我不明白您希望对 ju_end_date 应用哪个条件。不过应该和ju_start_time上的差不多吧。

SELECT sge_job.j_owner AS "Owner"
      ,SUM(sge_job_usage.ju_cpu) AS "CPU Total"
FROM sge_job_usage, sge_job 
WHERE sge_job_usage.C1 = sge_job.C2
  AND ju_start_time BETWEEN LOCALTIMESTAMP - INTERVAL '14 days' AND LOCALTIMESTAMP
GROUP BY j_owner;

我没有测试环境，所以我无法测试它，但我认为它应该可以工作。

有关主题检查的更多信息

http://www.postgresql.org/docs/9.1/static/functions-datetime.html

编辑：正如 ypercube 所说，您需要两个表的连接条件。

Answer 2

我假设这两列是DATE 类型。然后你需要这样的东西：

WHERE ju_start_time BETWEEN CURRENT_DATE - INTERVAL '14 days'
                        AND CURRENT_DATE
  AND ju_end_time >= CURRENT_DATE

或者这个（取决于你想要检查的具体情况：

WHERE ( ju_start_time, ju_end_time ) 
      OVERLAPS 
      ( CURRENT_DATE - INTERVAL '14 days', CURRENT_DATE )

查询使用 2 个表，但没有加入条件。应该是：

SELECT sge_job.j_owner AS "Owner"
      ,SUM(sge_job_usage.ju_cpu) AS "CPU Total"
FROM sge_job_usage
  JOIN sge_job
    ON sge_job.SomeColumn = sge_job_usage.SomeColumn 
WHERE   ...
GROUP BY j_owner;

Answer 3

不清楚ju_end_date是否需要相同的条件，但结构应该是：

...
WHERE ju_start_time BETWEEN getdate() and DateAdd(d,-14, getdate())