When there are too many parameters, parameterized insertion has performance problems.

[0611163]

When there are too many parameters, parameterized insertion has performance problems.

bool add = !command.Parameters.Contains(name);

When the count of command.parameters is large, the performance is poor.

Used for batch insert by one SQL statement. Mabe a lot of parameters.

PR: https://github.com/DapperLib/Dapper/pull/1816