Recently, in #2173, I fixed a bug in search filtering using a workaround. I now found a better solution that can scale better and eliminate the need of transmitting the whole list of native speakers for every query: server-side variables. According to this documentation, you can set the variable once, and then use it in a filter as a value for IN().
Recently, in #2173, I fixed a bug in search filtering using a workaround. I now found a better solution that can scale better and eliminate the need of transmitting the whole list of native speakers for every query: server-side variables. According to this documentation, you can set the variable once, and then use it in a filter as a value for IN().