I'm implementing filtering in a graphql api now, on a sql backend (a fixed constraint). We decided we just can't support arbitrary filtering. Full table scans d

I'm implementing filtering in a graphql api now, on a sql backend (a fixed constraint). We decided we just can't support arbitrary filtering. Full table scans don't scale, and an index for every column is costly. So we'll support it only on indexed columns and add indexes selectively. If graphql did require arbitrary filtering it would be useless to us at this point.