[英]SQL Query Merge 2 Columns Into 1 Column By Eliminating Selected Value
簡單的用case
。 對於您的數據,這似乎有效:
select name,
(case when credit_code = 110 then debit_code else credit_code end)
from t;
如果兩者都可以是110
,那么你會想要:
select name,
(case when credit_code <> 110 then credit_code
when debit_code <> 110 then debit_code
end) as code
from t;
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