rizhi
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![rizhi](/uploads/image/f/774191-47-1.jpg?t=rizhi)
String sql=" delete from rizhi where data="+data;为什么总是报错,dat
Stringsql="deletefromrizhiwhere`data`='"+data+"'";varchar型的值,需要用单引号包起来再问:Stringsql="deletefromrizhiw