解析查询时出错

Question

错误：

[token line number = 1,token line offset = 15,token in error = %]

我的代码：

 SqlCeCommand cmd = con.CreateCommand();
 cmd.Connection = con;
 cmd.CommandText = "select emails from contacts where name like %@name";
 cmd.Parameters.AddWithValue("@name", name);
 SqlCeDataReader data = cmd.ExecuteReader();
 //.. 

我相信这是因为查询中的@name。 我也试过了：select emails from contacts where name like '%@name'

我是如何解决的？谢谢！

Answer 1

您需要在SQL解析器中隐藏%，因为它是字符串文字的一部分：

SqlCeCommand cmd = con.CreateCommand();
cmd.Connection = con;
cmd.CommandText = "select emails from contacts where name like @name";
cmd.Parameters.AddWithValue("@name", "%"+name);
SqlCeDataReader data = cmd.ExecuteReader();

Answer 2

你应该试试这个：

select emails from contacts where name like '%'+@name