-- join with pseudoconstant quals EXPLAIN (VERBOSE, COSTS OFF) SELECT t1.c1, t2.c1 FROM ft1 t1 JOIN ft2 t2 ON (t1.c1 = t2.c1 AND CURRENT_USER = SESSION_USER) ORDER BY t1.c3, t1.c1 OFFSET 100 LIMIT 10; - QUERY PLAN ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- + QUERY PLAN +----------------------------------------------------------------------------------------------------------------------------------------------- Limit Output: t1.c1, t2.c1, t1.c3 - -> Result + -> Sort Output: t1.c1, t2.c1, t1.c3 - One-Time Filter: (CURRENT_USER = SESSION_USER) - -> Foreign Scan - Output: t1.c1, t1.c3, t2.c1 - Relations: (public.ft1 t1) INNER JOIN (public.ft2 t2) - Remote SQL: SELECT r1."C 1", r2."C 1", r1.c3 FROM ("S 1"."T 1" r1 INNER JOIN "S 1"."T 1" r2 ON (((r2."C 1" = r1."C 1")))) ORDER BY r1.c3 ASC NULLS LAST, r1."C 1" ASC NULLS LAST -(9 rows) + Sort Key: t1.c3, t1.c1 + -> Result + Output: t1.c1, t2.c1, t1.c3 + One-Time Filter: (CURRENT_USER = SESSION_USER) + -> Foreign Scan + Output: t1.c1, t1.c3, t2.c1 + Relations: (public.ft1 t1) INNER JOIN (public.ft2 t2) + Remote SQL: SELECT r1."C 1", r2."C 1", r1.c3 FROM ("S 1"."T 1" r1 INNER JOIN "S 1"."T 1" r2 ON (((r2."C 1" = r1."C 1")))) +(12 rows) -- non-Var items in targetlist of the nullable rel of a join preventing -- push-down in some cases