Unbuffered Output Very Slow

Question

I generate a very large .csv file from a database using the method outlined in

https://stackoverflow.com/a/13456219/141172

It works fine, up to a point. Whe

Answer 1

In Eric's latest update, he mentioned using another thread. I too had this problem for implementing database exports. Here is some example code for the solution I used:

Handling with temporary file stream