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230问答网 > 我C#中需要使用到的SQL语句有变量，请问这么写可不可以？

我C#中需要使用到的SQL语句有变量，请问这么写可不可以？

2025-03-26 08:49:59

推荐回答（2个）

回答1：

可以，不过看你的C#写的有点不太正确
string sql="update nxdpjl set "+ str + i.toString() + j.toString() + "=(select count(test1) from test where test1='"+j.toString()+"') where prid='ceshi2'";
如果有问题可以利用C#的调试工具断点跟踪一下变量 sql的内容，把该内容放到数据库中执行一下，便很容易能找出问题所在了

回答2：

当然能不过你拼接的时候要主意容易出错特别是拼接sql 要到运行时才能报错
你最好在数据库执行一便

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