Oracle

Cấu trúc chuỗi trong oracle

Cộng chuỗi:

select ‘a’ || ‘-‘ || ‘c’ as string
from TBL_CYCLE T

 kết quả:

string

a – c

Lấy substring

select SUBSTR(T.cycle,1,3) || ‘-‘ || SUBSTR(T.CYCLE_YEAR,3,4)
from TBL_CYCLE T

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