SAS：分钟数计算

Question

+--------------+--------------+
| switch_time1 | switch_time2 |
+--------------+--------------+
| 8:00:15      | 8:32:15      |
| 9:12:13      | 9:18:13      |
| 18:20:36     | 18:46:36     |
+--------------+--------------+

如何在SAS proc sql中使用正确的时间计算格式？

PROC SQL;
   CREATE TABLE MC_ET AS
   SELECT 
                sum(case when switch_time2-switch_time1>5 minutes and switch_time2-switch_time1<10mintues then 1 else 0 end) as Count_of_8,
                sum(case when switch_time2-switch_time1>10 minutes and switch_time2-switch_time1<15mintues then 1 else 0 end as count_of_9,      ...
      FROM have
;
QUIT;

Answer 1

您非常接近。请注意，时间以秒为单位存储，因此您的条件乘以60（5分钟* 60秒/分钟）= 300秒

PROC SQL;
   CREATE TABLE MC_ET AS
   SELECT 
                sum(case when switch_time2-switch_time1> (5*60) and switch_time2-switch_time1< (10*60) then 1 else 0 end) as Count_of_8,
                sum(case when switch_time2-switch_time1>(10*60) and switch_time2-switch_time1<(15*60) then 1 else 0 end as count_of_9,      ...
      FROM have
;
QUIT;