where
Oracle 9iの条件で計算列を使用する方法は ?
のようなものを使いたい
select decode (:pValue,1,
select sysdate from dual,
select activation_date from account where AcNo = 1234) as calDate
where caldate between startDate and endDate;
where
Oracle 9iの条件で計算列を使用する方法は ?
のようなものを使いたい
select decode (:pValue,1,
select sysdate from dual,
select activation_date from account where AcNo = 1234) as calDate
where caldate between startDate and endDate;
インライン ビューを使用できます。
select calcdate from
(
select startDate, endDate,
decode (:pValue,1,
select sysdate from dual,
select activation_date from account where AcNo = 1234) as calcdate
)
where calcdate between startDate and endDate;
デュアルから日付を選択して、結果を結合できます。
select *
from <<your table with startDate and endDate columns>> -- Since you ommited the main "from" clause from your statement
, (
select decode( :pValue
, 1, sysdate
, ( select activation_date from account where AcNo = 1234 )
) as calDate
from dual
) c
where c.calDate between startDate and endDate
... -- any other conditions you may need