我的字体在IE11中不起作用,我想知道是否有人知道为什么?
SELECT
-- Returns first non-null value, so order by hierarchy
COALESCE(B.Eligible, M.Eligible, W.Eligible) AS Eligible
from Job J
Inner Join Worker W on W.Job_Id = J.Id
Left Join Manager M on M.Id= W.ManagerID
Left Join Boss B on B.Id = M.BossId
Where J.Id = 1