小编Jub*_*ert的帖子

如何在单个语句中获得具有不同条件的DISTINCT行，如果计数为零，则结果为零？COUNTSELECT

我尝试了以下查询：

SELECT DISTINCT
    A.DeviceFilter,
    (SELECT count(*) FROM DeviceLicense AS B WHERE A.DeviceFilter = B.DeviceFilter AND b.OrganizationId = 1001) 
FROM
    DeviceLicense AS A
GROUP BY
    A.DeviceFilter