SQL 选项显示评估列值的结果

Question

I have a table as shown below

SourceCustomerId	HasTaxBenifit	HasCollateral	HasLoan
100021	No	No	No
100022	No	No	Yes
100023	No	Yes	No
100024	No	Yes	Yes
100025	Yes	No	No
100026	Yes	No	Yes
100027	Yes	Yes	No
100028	YEs	Yes	Yes

On Using a select statement, the expected output.

SourceCustomerId	BinaryTaxBenifit	BinaryCollateral	BinaryLoan
100021	0	0	0
100022	0	0	1
100023	0	1	0
100024	0	1	1
100025	1	0	0
100026	1	0	1
100027	1	1	0
100028	1	1	1

The logic is every column has a binary equivalent and they will be having a value of 0 if the columns are having a value 'No'. else 'Yes'. How do I implement this?

Answer 1

You can use a case expression:

select t.*,
       (case when HasTaxBenifit = 'Y' then 1 else 0 end) as BinaryTaxBenefit,
       . . . 
from t;