SQL电话号码限制

Question

Constraint for Phone Number. if it is starting with 03 then it must be 11 digits long, but if the digits are 10 then the second digit must not be 3. my code is not working correctly help please.

c_Phone varchar(11) unique c_Phone check(c_Phone not like '%[^0-9]%'and 
((c_Phone like '03%' and len(c_Phone)=11) or 
(c_Phone like '0^3%' and len(c_Phone)=10))))

Answer 1

alter table dbo.Test
add constraint UQ_Phone unique (c_Phone)


alter table dbo.Test
add constraint CC_Phone  check
(
    c_Phone not like '%[^0-9]%'and 
    ((c_Phone like '03%' and len(c_Phone) = 11) or 
    (c_Phone not like '_3%' and len(c_Phone) = 10))
)