蜂巢SQL

Question

我想返回有兩個連字符前的所有電話號碼：999-999-9999

SELECT INSTR(phonenumber, '-', 1, 2), phonenumber 
From phonetable 
Where length(phonenumber) = 11 
And INSTR(phonenumber, '-') = 1 

我要像999-999-9999

Answer 1

select * 
from phonetable 
where phonenumber like '___-___-____' 

返回電話號碼

或

select * 
from phonetable 
where phonenumber rlike '^\\d{3}-\\d{3}-\\d{4}$'