ggplot2如何在保留边框轮廓的同时删除x和y轴上的边框线

Question

我想删除底部和左侧的黑色边框线，同时保留紫色边框。

update C
set C.mergedTo = mc.MergeToCID, C.isMerged = 1, C.isActive = 0
from Customers as C
inner join #MergeCustomers as mc on mc.CID = C.CID
where mc.MergeToCID IS NOT NULL;

image