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一个关于CAST命令的小疑点,求解救
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2016-04-24 09:43:10.0
一个关于CAST命令的小问题,求解救
表A中的B列为VARCHAR类型,现在要实现B=10-B,该如何编写?
update a set b=10-cast(b as int) where.............错在那里,求救啊
------解决思路----------------------
update a set b=10-cast(b as numeric(18,2)) where
b是不是有小数点
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