mongoimport csv ignore commented lines

Question

I am doing mongoimport with csv type and couldn't find an option to ignore commented lines. My csv has commented lines that are marked with "#" as the starting character. Basically, I am invoking MongoDB through a node.js app. No way to ignore these? Could someone suggest if there is an option?

Answer 1

CSV (Comma Separated Values) format is intentionally simple and does not have support for comments. You'll have to pre-filter your commented lines before passing through to mongoimport.

mongoimport is intended to be used from a command-line, but you've mentioned you are talking to MongoDB from a Node.js app.

Rather than invoking mongoimport, I would recommend using a node.js csv module. You can then easily do your own line-based filtering for comments or other format deviations, and insert using the MongoDB driver directly.