How to set_index with two columns?

[sunhailin-Leo]

• I want to use two columns to be a unique index. How can I implement it?

[pjebs]

There is no support of indexing.
If you want to implement it, you will need to create the index externally (but it will then double the memory usage for the columns you want to index).

Then everytime you attempt to insert into the dataframe, you check with your external index.

[pjebs]

https://github.com/blugelabs/bluge