Filter data through CQL2(Common Query Language)

[huanglii]

just like http://localhost:3000/points?filter=name like '%hello%'

[CommanderStorm]

The query language is quite involved to implement.
Maybe https://docs.rs/cql2 could help, but still seems like a lot of work.
=> At least it is not a priority for me. Other contributors might see this differently

We currently support postgis-functions which have a similar level of expressiveness, though you will need to hardcode what the input can be.

Given that the query language supports queries which might be pretty expensive (=> might be opening us up to a DOS attack), I am not shure at which level this should be supported.
=> What is your concrete usecase?

[huanglii]

I want to have a query that is as flexible as CQL, and if we use functions, we may need to write many functions to implement it.

In addition, through the filter, when I only need a portion of the data, the tile size will also be much smaller.