select Page Boundaries
fun selectPageBoundaries(entityName: String, where: Where<*>? = null, orderBy: List<OrderBy<*>> = emptyList(), expiresAt: ERROR CLASS: Symbol not found for Instant?? = null): (anchor: String?, limit: Long) -> ERROR CLASS: Symbol not found for Query<kotlin/String>(source)
Returns a factory that produces page boundary queries for keyset paging. Uses ROW_NUMBER() to pick every Nth key from the ordered result set.