select convert(varchar(10),dateadd(dd,number,dateadd(month,-1,getdate())),120) as dt
from master..spt_values
where type='P' and
dateadd(dd,number,dateadd(month,-1,getdate()))<=getdate()
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作者:a-b-d
來源:CSDN
原文:https://blog.csdn.net/a6622004/article/details/80911072
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