EmpMaster

empid firstName  lastName  lstatus
1       Mark      Rowen      1
2       John      Griffin    1
3       Derick    Rose       1


EmpPers
----------
empPersSeq  empID   perTypeID   PersTypeValue
1             1        1            Good
2             1        2            Fair 
3             1        3            Good 
4             2        1            Fair
5             2        2            Fair
6             2        2            Fair

如何从EmpMaster中获取EmpPers表中没有perTypeID = 3条记录的所有EmpId列表？

提前致谢

Answer 1

select *
from EmpMaster e
where not exists (
    select *
    from EmpPers p
    where p.empID = e.empID and p.perTypeID = 3
)

Answer 2

我相信一个NOT EXISTS可以解决这个问题：

SELECT 
em.empid
FROM EmpMaster em
WHERE NOT EXISTS (
    SELECT NULL 
    FROM EmpPers 
    WHERE empID = em.empid AND perTypeID = 3
);

Answer 3

如果我理解正确，你可以这样做：

SELECT e.empid FROM EmpMaster e
WHERE    (SELECT COUNT(*) 
         FROM EmpPers p
         WHERE e.empid = p.empID AND p.empPersSeq = 3) = 0

Answer 4

您可以加入2个表，在empid上聚合，并使用HAVING子句仅选择perTypeID从不= 3的empid。

select a.empid
from EmpMaster a
    left join EmpPers b
    on a.empid = b.empid
group by a.empid
HAVING max(case when b.perTypeID = 3 then 1 else 0 end) =0

使用另一个表中的某些值检查表

EmpMaster

4 个答案: