[英]Convert VARCHAR in format 35:23:12 to an datatype i can sum
我有以下格式的varchar數據:
示例1-00:00:06
示例1-372:25:27
它代表小時:分鍾:秒
我需要能夠將其轉換為數據類型,我可以對其求和,我想要單獨的小時和分鍾。 無論如何有轉換此數據,以便我可以與查詢求和?
注意,我無法更改在其他人的數據庫上執行某些工作的表。
使用正則表達式將拆分您的字符串,以便您可以使用它們
select
regexp_substr('123:20:20' ,'(.*?)(:|$)', 1, 1, NULL, 1 ) HOUR,
regexp_substr('123:20:20' ,'(.*?)(:|$)', 1, 2, NULL, 1 ) MIN,
regexp_substr('123:20:20' ,'(.*?)(:|$)', 1, 3, NULL, 1 ) SECOND
from dual;
如@Walucas所示,您可以使用正則表達式提取字符串值的小時,分鍾和秒部分(假設它們的格式均相同):
select statustracking,
regexp_substr(statustracking ,'(.*?)(:|$)', 1, 1, null, 1) as h,
regexp_substr(statustracking ,'(.*?)(:|$)', 1, 2, null, 1) as m,
regexp_substr(statustracking ,'(.*?)(:|$)', 1, 3, null, 1) as s
from your_table;
STATUSTRACKING H M S
-------------- --------- --------- ---------
00:00:06 00 00 06
372:25:27 372 25 27
然后將它們轉換為數字和多個元素,以使它們全部代表秒數(例如),然后將它們加在一起得到字符串表示的秒總數:
select statustracking,
3600 * to_number(regexp_substr(statustracking ,'(.*?)(:|$)', 1, 1, null, 1)) as h,
60 * to_number(regexp_substr(statustracking ,'(.*?)(:|$)', 1, 2, null, 1)) as m,
to_number(regexp_substr(statustracking ,'(.*?)(:|$)', 1, 3, null, 1)) as s,
3600 * to_number(regexp_substr(statustracking ,'(.*?)(:|$)', 1, 1, null, 1))
+ 60 * to_number(regexp_substr(statustracking ,'(.*?)(:|$)', 1, 2, null, 1))
+ to_number(regexp_substr(statustracking ,'(.*?)(:|$)', 1, 3, null, 1)) as total_s
from your_table;
STATUSTRACKING H M S TOTAL_S
-------------- ---------- ---------- ---------- ----------
00:00:06 0 0 6 6
372:25:27 1339200 1500 27 1340727
然后將這些總數相加:
select sum(
3600 * to_number(regexp_substr(statustracking ,'(.*?)(:|$)', 1, 1, null, 1))
+ 60 * to_number(regexp_substr(statustracking ,'(.*?)(:|$)', 1, 2, null, 1))
+ to_number(regexp_substr(statustracking ,'(.*?)(:|$)', 1, 3, null, 1))
) as total_s
from your_table;
TOTAL_S
----------
1340733
然后反轉轉換過程,將總秒數分解為小時,分鍾和(如果需要)秒數:
select floor(total_s / 3600) as h,
floor(mod(total_s, 3600) / 60) as m,
mod(total_s, 60) as s
from (
select sum(
3600 * to_number(regexp_substr(statustracking ,'(.*?)(:|$)', 1, 1, null, 1))
+ 60 * to_number(regexp_substr(statustracking ,'(.*?)(:|$)', 1, 2, null, 1))
+ to_number(regexp_substr(statustracking ,'(.*?)(:|$)', 1, 3, null, 1))
) as total_s
from your_table
);
H M S
---------- ---------- ----------
372 25 33
如果您想返回字符串格式,則可以將它們與冒號連接在一起,並使用lpad()
或to_char()
用零左填充:
select to_char(total_s / 3600, 'FM9999900')
||':'|| to_char(mod(total_s, 3600) / 60, 'FM00')
||':'|| to_char(mod(total_s, 60), 'FM00')
as total_time
from (
select sum(
3600 * to_number(regexp_substr(statustracking ,'(.*?)(:|$)', 1, 1, null, 1))
+ 60 * to_number(regexp_substr(statustracking ,'(.*?)(:|$)', 1, 2, null, 1))
+ to_number(regexp_substr(statustracking ,'(.*?)(:|$)', 1, 3, null, 1))
) as total_s
from your_table
);
TOTAL_TIME
----------------
372:26:33
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