获取特定持续时间的秒数

Question

我有一个包含呼叫信息的表格，每个呼叫都有一个 start date 和 end date，日期类型为 YYYY:MM:DD HH:MI:SS 格式。

如何获得以下内容：

1- start date 和 end date 之间从 00:00:00 到 07:30:00 范围内的秒数，以及超出给定范围的秒数（00:00:00 到 07:30:00）。

2- start date 和 end date 之间的周五秒数。

Answer 1

与：

SELECT (end_date - start_date), ... FROM ...  

你获得天数...

与：

SELECT (end_date - start_date)*24, ... FROM ...  

你得到小时数...

并且，与：

SELECT (end_date - start_date)*24*60*60, ... FROM ...  

你获得秒数...

Answer 2

我尝试为每个调用和函数greatest、least 生成分层子查询天数：

^SQLFiddle

with t as (
  select id, sd, ed, trunc(sd)+level-1 dt
    from calls 
    connect by trunc(sd)+level-1<=trunc(ed) 
      and prior dbms_random.value is not null and prior id = id)
select id, sum(sec) sec, sum(fri) fri, sum(mrn) mrn, sum(sec)-sum(mrn) rest
  from (
    select id, (least(ed, dt+1)-greatest(sd, dt))*24*60*60 sec,
           case when trunc(dt) - trunc(dt, 'iw') = 4 
                then (least(dt+1, ed) - greatest(dt, sd)) * 24*60*60 end fri,
           (least(dt+7.5/24, ed) - greatest(dt, sd)) * 24*60*60 mrn
      from t )
  group by id

---

“星期五”的查询版本 - “非星期五早上” - “非星期五休息日”输出（在 cmets 中精确）：

with cte as (
  select id, sd, ed, trunc(sd)+level-1 dt from calls
    connect by level <= trunc(ed)-trunc(sd) + 1 
      and prior dbms_random.value is not null and prior id = id )
select id, max(sd) start_time, max(ed) end_time, 
       sum(sec) all_seconds, sum(fri) fridays, sum(mrn) mornings,
       sum(sec) - sum(fri) - sum(mrn) rest
  from (
    select id, sd, ed, dt, (least(ed, dt+1) - greatest(sd, dt))*24*60*60 sec,
        case when dt - trunc(dt, 'iw') = 4 
             then (least(ed, dt+1) - greatest(sd, dt))*24*60*60 else 0 end fri,
        case when dt - trunc(dt, 'iw') <> 4 and dt+7.5/24 > sd 
             then (least(dt+7.5/24, ed) - greatest(sd, dt))*24*60*60 
             else 0 end mrn
      from cte )
  group by id order by id

样本数据和输出：

create table calls (id number(3), sd date, ed date);
insert into calls values (1, timestamp '2015-12-25 07:29:00', timestamp '2015-12-25 07:31:00');
insert into calls values (2, timestamp '2015-12-24 01:00:00', timestamp '2015-12-26 23:12:42');
insert into calls values (3, timestamp '2015-12-24 23:58:00', timestamp '2015-12-25 00:01:00');
insert into calls values (4, timestamp '2015-12-24 07:00:00', timestamp '2015-12-25 00:01:00');

  ID START_TIME          END_TIME            ALL_SECONDS    FRIDAYS   MORNINGS       REST
---- ------------------- ------------------- ----------- ---------- ---------- ----------
   1 2015-12-25 07:29:00 2015-12-25 07:31:00         120        120          0          0
   2 2015-12-24 01:00:00 2015-12-26 23:12:42      252762      86400      50400     115962
   3 2015-12-24 23:58:00 2015-12-25 00:01:00         180         60          0        120
   4 2015-12-24 07:00:00 2015-12-25 00:01:00       61260         60       1800      59400

编辑：

Answer 3

这很好用，with 子句仅用于测试：

with a as(
select
TO_TIMESTAMP('122320158:00:00','MMDDYYYYHH:MI:SS') start_date,TO_TIMESTAMP('122320158:01:06','MMDDYYYYHH:MI:SS') end_date from dual
union all
select
TO_TIMESTAMP('112420152:00:00','MMDDYYYYHH:MI:SS') start_date,TO_TIMESTAMP('112420152:00:53','MMDDYYYYHH:MI:SS') end_date from dual
union all
select
TO_TIMESTAMP('102720157:31:00','MMDDYYYYHH:MI:SS') start_date,TO_TIMESTAMP('102720157:31:10','MMDDYYYYHH:MI:SS') end_date from dual
) -- until here, with clause just give sample data
select  'before7.30' range,sum(EXTRACT(minute FROM(end_date-start_date))*60+EXTRACT(hour FROM(end_date-start_date))*3600+EXTRACT(second FROM(end_date-start_date))) as seconds
from (
select * from a
)
where start_date < trunc(start_date)+(1/24)*7.5 -- start_date<7.30
union all
select  'after7.30' range,sum(EXTRACT(minute FROM(end_date-start_date))*60+EXTRACT(hour FROM(end_date-start_date))*3600+EXTRACT(second FROM(end_date-start_date))) as seconds
from (
select * from a
)
where start_date >= trunc(start_date)+(1/24)*7.5 -- start_date>=7.30

输出：

before7.30  53
after7.30   76

如果您的表名为 cdr_table，只需删除 with 子句：

select  'before7.30' range,sum(EXTRACT(minute FROM(end_date-start_date))*60+EXTRACT(hour FROM(end_date-start_date))*3600+EXTRACT(second FROM(end_date-start_date))) as seconds
from (
select * from cdr_table
)
where start_date < trunc(start_date)+(1/24)*7.5
union all
select  'after7.30' range,sum(EXTRACT(minute FROM(end_date-start_date))*60+EXTRACT(hour FROM(end_date-start_date))*3600+EXTRACT(second FROM(end_date-start_date))) as seconds
from (
select * from cdr_table
)
where start_date >= trunc(start_date)+(1/24)*7.5