I have about 500K rows I need to return from my database (please don't ask why).
I will then need to save these results as XML (more URGH) and the ftp this file to somewhere magical.
I also need to transform the each row in the result set.
Right now, this is what I'm doing with say .. TOP 100
results:
Query<T>
method, which throws the entire result set into memory This works fine for 100 rows, but I get an Out Of Memory exception with AutoMapper when trying to convert the 500K results to a new collection.
So, I was wondering if I could do this...
I'm trying to stop throwing everything into RAM. My thinking is that if I can stream stuff, it's more memory efficient as I only work on a single result set of data.
using Dapper's
Query<T>
method, which throws the entire result set into memory
It is a good job, then, that one of the optional parameters is a bool
that lets you choose whether to buffer or not ;p
Just add , buffer: false
to your existing call to Query<T>
.
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.