C# Optimisation: Inserting 200 million rows into database

Question

I have the following (simplified) code which I\'d like to optimise for speed:

long inputLen = 50000000; // 50 million 
DataTable dataTable = new DataTable();
Dat         


        

Answer 1

For such a big table, you should instead use the

public void WriteToServer(IDataReader reader)

method.

It may mean you'll have to implement yourself a "fake" IDataReader interface with your code (if you' don't get the data from an existing IDataReader), but this way, you'll get "streaming" from end to end, and will avoid a 200 million loop.