尝试解决位列的三个条件

Question

看起来这应该不难做到，但我缺乏 TSQL 知识。如何解决位列的三个条件？这就是我所拥有的，但编译器当然不喜欢 CASE 中的 OR。

需要明确的是，在“全部”的情况下，我想要零列值和一列值。 Null 将被排除。

我的桌子

Id  Name                LockedState    Deleted
12  Doe, John               0             1
14  Doe, Johnny             0             1
15  Fischer, Julia          1             1
16  Hemsworth, Christopher  0             1
17  Getty, Kristyn          1             1



SELECT *
FROM MyTable
WHERE Deleted = @Deleted
AND LockState = CASE
    WHEN @Assigned = 'ALL' THEN 0 OR 1
    WHEN @Assigned = 'Assigned' THEN 1
    WHEN @Assigned = 'UnAssigned' THEN 0
END

“全部”所需的输出

12  Doe, John               0             1
14  Doe, Johnny             0             1
15  Fischer, Julia          1             1
16  Hemsworth, Christopher  0             1
17  Getty, Kristyn          1             1

“已分配”的所需输出

15  Fischer, Julia          1             1
17  Getty, Kristyn          1             1

“未分配”的所需输出

12  Doe, John               0             1
14  Doe, Johnny             0             1
16  Hemsworth, Christopher  0             1

Answer 1

你可以使用这样的东西：

SELECT *
FROM MyTable
WHERE Deleted = @Deleted
AND (@Assigned = 'Assigned' AND LockState = 1
    OR @Assigned = 'UnAssigned' AND LockState = 0
    OR @Assigned = 'ALL')

或者像这样：

SELECT *
FROM MyTable
WHERE Deleted = @Deleted
AND LockState = CASE
    WHEN @Assigned = 'ALL' THEN LockState
    WHEN @Assigned = 'Assigned' THEN 1
    WHEN @Assigned = 'UnAssigned' THEN 0
END