Dapper中有ExecuteScalar吗？

Question

看起来在达珀有一个ExecuteScalar ..。

http://code.google.com/p/dapper-dot-net/issues/attachmentText?id=22&aid=220000000&name=ExecuteScalar.cs&token=9e2fd8899022f507b140ffb883c60e34

ExecuteScalar是否已重命名或删除？

现在可以使用.Query或.Query实现这一点吗

Answer 1

1.28中刚刚添加了ExecuteScalar：https://www.nuget.org/packages/Dapper

Answer 2

我可以在1.42.0版本中调用ExecuteScalar< T>

    public Boolean BeforeToday(DateTime dateInQuestion)
    {
        try
        {
            using (var conn = new SqlConnection(ConnectionString))
            {
                String sql = @"SELECT CONVERT(bit, CASE WHEN getdate() > @dateParameter THEN 1 ELSE 0 END) AS BeforeToday";

                var result = conn.ExecuteScalar<Boolean>(sql, new { dateParameter = dateInQuestion });

                return result;
            }
        }
        catch (Exception)
        {
            return dateInQuestion < DateTime.Now;
        }
    }

Answer 3

在1.50.4版本中，我能够调用connection.QuerySingle<int>(query,params)