self_join (317B)
1 # Self join 2 3 A *self join* means reusing the same [database_relation] twice in [conjunctive_query] 4 5 - for [enumeration], make lower bounds harder 6 - for [pqe], makes upper bounds harder 7 8 Up: [conjunctive_query], [join] 9 10 See also: [sjfcq], [conjunctive_query_self_join_free] 11 12 Aliases: self joins, self-join, self-joins