I am trying to query a set of Azure SQL Databases using the sp_execute_remote
SQL function with Dapper and DynamicParameters as follows:
Task<List<T>> ExecuteMultiShardCommand<T>(SqlBuilder.Template Template, int Timeout = 120)
{
var mParams = new DynamicParameters(Template.Parameters);
mParams.Add("@datasourcename", "<datasource>");
mParams.Add("@statement", Template.RawSql, DbType.String);
using (var conn = new SqlConnection(config["<sqlconnectionstring>"]))
{
var results = await conn.QueryAsync<T>("sp_execute_remote", mParams, commandTimeout: Timeout, commandType: CommandType.StoredProcedure);
return results.ToList();
}
}
Running this throws a SQL exception:
System.Data.SqlClient.SqlException : Procedure expects parameter '@statement' of type 'ntext/nchar/nvarchar'.
I have not configured Dapper anywhere in my application. Isn't the default handling for DbType.String
a nvarchar
?