I have an SQL table with columns (month, year, and yearmonth)
Month year
5 2020
6 2020
11 2020
I want to insert yearmonth column values in this format
yearmonth
202005
202006
202011
I've tried couple of Datetime functions, but it didn't work.
I think that it is simpler to use string functions:
select t.*, concat(year, lpad(month, 2, '0')) as yearmonth
from mytable t
lpad()
adds the "missing" 0
to the month part if needed, which you can then concatenate with the year.
On the other hand, if you want a numeric result, arithmetics is the way to go:
select t.*, year * 100 + month as yearmonth
from mytable t
如果你想要一个字符串,我可能会使用:
select cast(year * 100 + month as char)
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.