У меня есть запрос, который объединяет и условие условия. И я получаю ошибку множественного идентификатора на «ELSE TP1.ValidSupervisorID
». Ниже приведен запрос.ошибка множественного идентификатора с соединениями и футлярами
SELECT
distinct TP.PeopleKey,
TP1.ValidSupervisorID
FROM tbl_People TP
LEFT JOIN ( select tbl_People.PeopleKey,
CASE
WHEN tbl_People.SupervisorID in (select PersonnelNbr from tbl_People) THEN tbl_People.SupervisorID
ELSE ''
END ValidSupervisorID
FROM tbl_People
) as TP1 on TP.PeopleKey = TP1.PeopleKey
LEFT JOIN ( select tbl_People.PeopleKey,
CASE
WHEN tbl_People.CareerCounselorID in (select PersonnelNbr from tbl_People) THEN tbl_People.CareerCounselorID
WHEN tbl_People.CareerCounselorID=NULL OR tbl_People.CareerCounselorID='' THEN tbl_People.CareerCounselorID
ELSE TP1.ValidSupervisorID
END ValidCareerCounselorID
FROM tbl_People
) as TP2 on TP1.PeopleKey = TP2.PeopleKey
Может ли кто-нибудь помочь?
'tbl_People.CareerCounselorID = NULL' не будет работать ни. –