在sql中如何在'THEN'部分执行2操作

时间:2017-10-10 15:11:24

标签: sql oracle

我已经构建了这样的查询

 select IP,
(case when MINUTE_NUM+(SEGMENT_DURATION_TIME_SEC_QTY/60)>60 then 
 hour_24_hour_format_num+1
end) as end_hr,
(case when MINUTE_NUM+(SEGMENT_DURATION_TIME_SEC_QTY/60)<60 then MINUTE_NUM+
(SEGMENT_DURATION_TIME_SEC_QTY/60) 
end)as end_min 
from a608232_new_calls_with_tmst;

我想知道我可以在查询的then部分执行2个操作。 像这样的东西

 select IP,
(case when MINUTE_NUM+(SEGMENT_DURATION_TIME_SEC_QTY/60)>60 then 
 hour_24_hour_format_num+1 and minute_num=0
end) as end_hr,

当我尝试这样做时,会在and附近抛出语法错误。有没有办法实现这个目标?

更新:

  This one worked for me.   

 select 
 IP,hour_24_hour_format_num,MINUTE_NUM,SEGMENT_DURATION_TIME_SEC_QTY/60 
 min_duration,
(case when MINUTE_NUM+(SEGMENT_DURATION_TIME_SEC_QTY/60)>60 then 
hour_24_hour_format_num+1
      when MINUTE_NUM+(SEGMENT_DURATION_TIME_SEC_QTY/60)<60 then 
hour_24_hour_format_num
end) as end_hr,
(case when MINUTE_NUM+(SEGMENT_DURATION_TIME_SEC_QTY/60)>60 then 0
  when MINUTE_NUM+(SEGMENT_DURATION_TIME_SEC_QTY/60)<60 then MINUTE_NUM+
 (SEGMENT_DURATION_TIME_SEC_QTY/60) 
 end)as end_min
 from a608232_new_calls_with_tmst;

1 个答案:

答案 0 :(得分:0)

CASE表达式计算条件列表并返回多个可能的结果表达式之一。 由于它返回单个值,因此无法用于更新多个列或操作。

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