For some store types that support relational data (pgvector, mariadb), it is possible to store relational data and vector data in one table.

with the current interfaces there is no way to store and filter these addditional values.

The PgVector Store for example already supports filtering for the values with the options param of query, but additonal columns are not addable with the add function.

it would be helpful if prefiltering could be widely supported, as it enables many more applications of these systems.

What do you think?