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robertmhaasrobertmhaas
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postgres_fdw: Fix crash when pushing down multiple joins.
A join clause might mention multiple relations on either side, so it need not be the case that a given joinrel's constituent relations are all on one side of the join clause or all on the other. Report by Rajkumar Raghuwanshi. Analysis and fix by Michael Paquier and Ashutosh Bapat.
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‎contrib/postgres_fdw/expected/postgres_fdw.out‎

Lines changed: 252 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -987,6 +987,34 @@ SELECT t1.c1, t2.c1 FROM ft4 t1 LEFT JOIN ft5 t2 ON (t1.c1 = t2.c1) ORDER BY t1.
987987
40 |
988988
(10 rows)
989989

990+
-- left outer join three tables
991+
EXPLAIN (COSTS false, VERBOSE)
992+
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 LEFT JOIN ft2 t2 ON (t1.c1 = t2.c1) LEFT JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
993+
QUERY PLAN
994+
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
995+
Limit
996+
Output: t1.c1, t2.c2, t3.c3
997+
-> Foreign Scan
998+
Output: t1.c1, t2.c2, t3.c3
999+
Relations: ((public.ft2 t1) LEFT JOIN (public.ft2 t2)) LEFT JOIN (public.ft4 t3)
1000+
Remote SQL: SELECT r1."C 1", r2.c2, r4.c3 FROM (("S 1"."T 1" r1 LEFT JOIN "S 1"."T 1" r2 ON (((r1."C 1" = r2."C 1")))) LEFT JOIN "S 1"."T 3" r4 ON (((r2."C 1" = r4.c1))))
1001+
(6 rows)
1002+
1003+
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 LEFT JOIN ft2 t2 ON (t1.c1 = t2.c1) LEFT JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
1004+
c1 | c2 | c3
1005+
----+----+--------
1006+
11 | 1 |
1007+
12 | 2 | AAA012
1008+
13 | 3 |
1009+
14 | 4 | AAA014
1010+
15 | 5 |
1011+
16 | 6 | AAA016
1012+
17 | 7 |
1013+
18 | 8 | AAA018
1014+
19 | 9 |
1015+
20 | 0 | AAA020
1016+
(10 rows)
1017+
9901018
-- left outer join + placement of clauses.
9911019
-- clauses within the nullable side are not pulled up, but top level clause on
9921020
-- non-nullable side is pushed into non-nullable side
@@ -1060,6 +1088,34 @@ SELECT t1.c1, t2.c1 FROM ft5 t1 RIGHT JOIN ft4 t2 ON (t1.c1 = t2.c1) ORDER BY t2
10601088
| 40
10611089
(10 rows)
10621090

1091+
-- right outer join three tables
1092+
EXPLAIN (COSTS false, VERBOSE)
1093+
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 RIGHT JOIN ft2 t2 ON (t1.c1 = t2.c1) RIGHT JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
1094+
QUERY PLAN
1095+
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1096+
Limit
1097+
Output: t1.c1, t2.c2, t3.c3
1098+
-> Foreign Scan
1099+
Output: t1.c1, t2.c2, t3.c3
1100+
Relations: ((public.ft4 t3) LEFT JOIN (public.ft2 t2)) LEFT JOIN (public.ft2 t1)
1101+
Remote SQL: SELECT r4.c3, r2.c2, r1."C 1" FROM (("S 1"."T 3" r4 LEFT JOIN "S 1"."T 1" r2 ON (((r2."C 1" = r4.c1)))) LEFT JOIN "S 1"."T 1" r1 ON (((r1."C 1" = r2."C 1"))))
1102+
(6 rows)
1103+
1104+
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 RIGHT JOIN ft2 t2 ON (t1.c1 = t2.c1) RIGHT JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
1105+
c1 | c2 | c3
1106+
----+----+--------
1107+
22 | 2 | AAA022
1108+
24 | 4 | AAA024
1109+
26 | 6 | AAA026
1110+
28 | 8 | AAA028
1111+
30 | 0 | AAA030
1112+
32 | 2 | AAA032
1113+
34 | 4 | AAA034
1114+
36 | 6 | AAA036
1115+
38 | 8 | AAA038
1116+
40 | 0 | AAA040
1117+
(10 rows)
1118+
10631119
-- full outer join
10641120
EXPLAIN (COSTS false, VERBOSE)
10651121
SELECT t1.c1, t2.c1 FROM ft4 t1 FULL JOIN ft5 t2 ON (t1.c1 = t2.c1) ORDER BY t1.c1, t2.c1 OFFSET 45 LIMIT 10;
@@ -1088,6 +1144,202 @@ SELECT t1.c1, t2.c1 FROM ft4 t1 FULL JOIN ft5 t2 ON (t1.c1 = t2.c1) ORDER BY t1.
10881144
| 27
10891145
(10 rows)
10901146

1147+
-- full outer join three tables
1148+
EXPLAIN (COSTS false, VERBOSE)
1149+
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 FULL JOIN ft2 t2 ON (t1.c1 = t2.c1) FULL JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
1150+
QUERY PLAN
1151+
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1152+
Limit
1153+
Output: t1.c1, t2.c2, t3.c3
1154+
-> Foreign Scan
1155+
Output: t1.c1, t2.c2, t3.c3
1156+
Relations: ((public.ft2 t1) FULL JOIN (public.ft2 t2)) FULL JOIN (public.ft4 t3)
1157+
Remote SQL: SELECT r1."C 1", r2.c2, r4.c3 FROM (("S 1"."T 1" r1 FULL JOIN "S 1"."T 1" r2 ON (((r1."C 1" = r2."C 1")))) FULL JOIN "S 1"."T 3" r4 ON (((r2."C 1" = r4.c1))))
1158+
(6 rows)
1159+
1160+
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 FULL JOIN ft2 t2 ON (t1.c1 = t2.c1) FULL JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
1161+
c1 | c2 | c3
1162+
----+----+--------
1163+
11 | 1 |
1164+
12 | 2 | AAA012
1165+
13 | 3 |
1166+
14 | 4 | AAA014
1167+
15 | 5 |
1168+
16 | 6 | AAA016
1169+
17 | 7 |
1170+
18 | 8 | AAA018
1171+
19 | 9 |
1172+
20 | 0 | AAA020
1173+
(10 rows)
1174+
1175+
-- full outer join + right outer join
1176+
EXPLAIN (COSTS false, VERBOSE)
1177+
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 FULL JOIN ft2 t2 ON (t1.c1 = t2.c1) RIGHT JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
1178+
QUERY PLAN
1179+
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1180+
Limit
1181+
Output: t1.c1, t2.c2, t3.c3
1182+
-> Foreign Scan
1183+
Output: t1.c1, t2.c2, t3.c3
1184+
Relations: ((public.ft4 t3) LEFT JOIN (public.ft2 t2)) LEFT JOIN (public.ft2 t1)
1185+
Remote SQL: SELECT r4.c3, r2.c2, r1."C 1" FROM (("S 1"."T 3" r4 LEFT JOIN "S 1"."T 1" r2 ON (((r2."C 1" = r4.c1)))) LEFT JOIN "S 1"."T 1" r1 ON (((r1."C 1" = r2."C 1"))))
1186+
(6 rows)
1187+
1188+
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 FULL JOIN ft2 t2 ON (t1.c1 = t2.c1) RIGHT JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
1189+
c1 | c2 | c3
1190+
----+----+--------
1191+
22 | 2 | AAA022
1192+
24 | 4 | AAA024
1193+
26 | 6 | AAA026
1194+
28 | 8 | AAA028
1195+
30 | 0 | AAA030
1196+
32 | 2 | AAA032
1197+
34 | 4 | AAA034
1198+
36 | 6 | AAA036
1199+
38 | 8 | AAA038
1200+
40 | 0 | AAA040
1201+
(10 rows)
1202+
1203+
-- right outer join + full outer join
1204+
EXPLAIN (COSTS false, VERBOSE)
1205+
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 RIGHT JOIN ft2 t2 ON (t1.c1 = t2.c1) FULL JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
1206+
QUERY PLAN
1207+
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1208+
Limit
1209+
Output: t1.c1, t2.c2, t3.c3
1210+
-> Foreign Scan
1211+
Output: t1.c1, t2.c2, t3.c3
1212+
Relations: ((public.ft2 t2) LEFT JOIN (public.ft2 t1)) FULL JOIN (public.ft4 t3)
1213+
Remote SQL: SELECT r2.c2, r1."C 1", r4.c3 FROM (("S 1"."T 1" r2 LEFT JOIN "S 1"."T 1" r1 ON (((r1."C 1" = r2."C 1")))) FULL JOIN "S 1"."T 3" r4 ON (((r2."C 1" = r4.c1))))
1214+
(6 rows)
1215+
1216+
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 RIGHT JOIN ft2 t2 ON (t1.c1 = t2.c1) FULL JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
1217+
c1 | c2 | c3
1218+
----+----+--------
1219+
11 | 1 |
1220+
12 | 2 | AAA012
1221+
13 | 3 |
1222+
14 | 4 | AAA014
1223+
15 | 5 |
1224+
16 | 6 | AAA016
1225+
17 | 7 |
1226+
18 | 8 | AAA018
1227+
19 | 9 |
1228+
20 | 0 | AAA020
1229+
(10 rows)
1230+
1231+
-- full outer join + left outer join
1232+
EXPLAIN (COSTS false, VERBOSE)
1233+
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 FULL JOIN ft2 t2 ON (t1.c1 = t2.c1) LEFT JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
1234+
QUERY PLAN
1235+
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1236+
Limit
1237+
Output: t1.c1, t2.c2, t3.c3
1238+
-> Foreign Scan
1239+
Output: t1.c1, t2.c2, t3.c3
1240+
Relations: ((public.ft2 t1) FULL JOIN (public.ft2 t2)) LEFT JOIN (public.ft4 t3)
1241+
Remote SQL: SELECT r1."C 1", r2.c2, r4.c3 FROM (("S 1"."T 1" r1 FULL JOIN "S 1"."T 1" r2 ON (((r1."C 1" = r2."C 1")))) LEFT JOIN "S 1"."T 3" r4 ON (((r2."C 1" = r4.c1))))
1242+
(6 rows)
1243+
1244+
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 FULL JOIN ft2 t2 ON (t1.c1 = t2.c1) LEFT JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
1245+
c1 | c2 | c3
1246+
----+----+--------
1247+
11 | 1 |
1248+
12 | 2 | AAA012
1249+
13 | 3 |
1250+
14 | 4 | AAA014
1251+
15 | 5 |
1252+
16 | 6 | AAA016
1253+
17 | 7 |
1254+
18 | 8 | AAA018
1255+
19 | 9 |
1256+
20 | 0 | AAA020
1257+
(10 rows)
1258+
1259+
-- left outer join + full outer join
1260+
EXPLAIN (COSTS false, VERBOSE)
1261+
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 LEFT JOIN ft2 t2 ON (t1.c1 = t2.c1) FULL JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
1262+
QUERY PLAN
1263+
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1264+
Limit
1265+
Output: t1.c1, t2.c2, t3.c3
1266+
-> Foreign Scan
1267+
Output: t1.c1, t2.c2, t3.c3
1268+
Relations: ((public.ft2 t1) LEFT JOIN (public.ft2 t2)) FULL JOIN (public.ft4 t3)
1269+
Remote SQL: SELECT r1."C 1", r2.c2, r4.c3 FROM (("S 1"."T 1" r1 LEFT JOIN "S 1"."T 1" r2 ON (((r1."C 1" = r2."C 1")))) FULL JOIN "S 1"."T 3" r4 ON (((r2."C 1" = r4.c1))))
1270+
(6 rows)
1271+
1272+
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 LEFT JOIN ft2 t2 ON (t1.c1 = t2.c1) FULL JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
1273+
c1 | c2 | c3
1274+
----+----+--------
1275+
11 | 1 |
1276+
12 | 2 | AAA012
1277+
13 | 3 |
1278+
14 | 4 | AAA014
1279+
15 | 5 |
1280+
16 | 6 | AAA016
1281+
17 | 7 |
1282+
18 | 8 | AAA018
1283+
19 | 9 |
1284+
20 | 0 | AAA020
1285+
(10 rows)
1286+
1287+
-- right outer join + left outer join
1288+
EXPLAIN (COSTS false, VERBOSE)
1289+
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 RIGHT JOIN ft2 t2 ON (t1.c1 = t2.c1) LEFT JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
1290+
QUERY PLAN
1291+
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1292+
Limit
1293+
Output: t1.c1, t2.c2, t3.c3
1294+
-> Foreign Scan
1295+
Output: t1.c1, t2.c2, t3.c3
1296+
Relations: ((public.ft2 t2) LEFT JOIN (public.ft2 t1)) LEFT JOIN (public.ft4 t3)
1297+
Remote SQL: SELECT r2.c2, r1."C 1", r4.c3 FROM (("S 1"."T 1" r2 LEFT JOIN "S 1"."T 1" r1 ON (((r1."C 1" = r2."C 1")))) LEFT JOIN "S 1"."T 3" r4 ON (((r2."C 1" = r4.c1))))
1298+
(6 rows)
1299+
1300+
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 RIGHT JOIN ft2 t2 ON (t1.c1 = t2.c1) LEFT JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
1301+
c1 | c2 | c3
1302+
----+----+--------
1303+
11 | 1 |
1304+
12 | 2 | AAA012
1305+
13 | 3 |
1306+
14 | 4 | AAA014
1307+
15 | 5 |
1308+
16 | 6 | AAA016
1309+
17 | 7 |
1310+
18 | 8 | AAA018
1311+
19 | 9 |
1312+
20 | 0 | AAA020
1313+
(10 rows)
1314+
1315+
-- left outer join + right outer join
1316+
EXPLAIN (COSTS false, VERBOSE)
1317+
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 LEFT JOIN ft2 t2 ON (t1.c1 = t2.c1) RIGHT JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
1318+
QUERY PLAN
1319+
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1320+
Limit
1321+
Output: t1.c1, t2.c2, t3.c3
1322+
-> Foreign Scan
1323+
Output: t1.c1, t2.c2, t3.c3
1324+
Relations: (public.ft4 t3) LEFT JOIN ((public.ft2 t1) INNER JOIN (public.ft2 t2))
1325+
Remote SQL: SELECT r4.c3, r1."C 1", r2.c2 FROM ("S 1"."T 3" r4 LEFT JOIN ("S 1"."T 1" r1 INNER JOIN "S 1"."T 1" r2 ON (TRUE)) ON (((r2."C 1" = r4.c1)) AND ((r1."C 1" = r2."C 1"))))
1326+
(6 rows)
1327+
1328+
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 LEFT JOIN ft2 t2 ON (t1.c1 = t2.c1) RIGHT JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
1329+
c1 | c2 | c3
1330+
----+----+--------
1331+
22 | 2 | AAA022
1332+
24 | 4 | AAA024
1333+
26 | 6 | AAA026
1334+
28 | 8 | AAA028
1335+
30 | 0 | AAA030
1336+
32 | 2 | AAA032
1337+
34 | 4 | AAA034
1338+
36 | 6 | AAA036
1339+
38 | 8 | AAA038
1340+
40 | 0 | AAA040
1341+
(10 rows)
1342+
10911343
-- full outer join + WHERE clause, only matched rows
10921344
EXPLAIN (COSTS false, VERBOSE)
10931345
SELECT t1.c1, t2.c1 FROM ft4 t1 FULL JOIN ft5 t2 ON (t1.c1 = t2.c1) WHERE (t1.c1 = t2.c1 OR t1.c1 IS NULL) ORDER BY t1.c1, t2.c1 OFFSET 10 LIMIT 10;

‎contrib/postgres_fdw/postgres_fdw.c‎

Lines changed: 1 addition & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -727,12 +727,9 @@ get_useful_ecs_for_relation(PlannerInfo *root, RelOptInfo *rel)
727727
if (bms_is_subset(relids, restrictinfo->right_ec->ec_relids))
728728
useful_eclass_list = list_append_unique_ptr(useful_eclass_list,
729729
restrictinfo->right_ec);
730-
else
731-
{
732-
Assert(bms_is_subset(relids, restrictinfo->left_ec->ec_relids));
730+
else if (bms_is_subset(relids, restrictinfo->left_ec->ec_relids))
733731
useful_eclass_list = list_append_unique_ptr(useful_eclass_list,
734732
restrictinfo->left_ec);
735-
}
736733
}
737734

738735
return useful_eclass_list;

‎contrib/postgres_fdw/sql/postgres_fdw.sql‎

Lines changed: 36 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -343,6 +343,10 @@ SELECT t1.c1, t2.c2, t3.c3 FROM ft1 t1 JOIN ft2 t2 ON (t1.c1 = t2.c1) JOIN ft4 t
343343
EXPLAIN (COSTS false, VERBOSE)
344344
SELECT t1.c1, t2.c1 FROM ft4 t1 LEFT JOIN ft5 t2 ON (t1.c1 = t2.c1) ORDER BY t1.c1, t2.c1 OFFSET 10 LIMIT 10;
345345
SELECT t1.c1, t2.c1 FROM ft4 t1 LEFT JOIN ft5 t2 ON (t1.c1 = t2.c1) ORDER BY t1.c1, t2.c1 OFFSET 10 LIMIT 10;
346+
-- left outer join three tables
347+
EXPLAIN (COSTS false, VERBOSE)
348+
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 LEFT JOIN ft2 t2 ON (t1.c1 = t2.c1) LEFT JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
349+
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 LEFT JOIN ft2 t2 ON (t1.c1 = t2.c1) LEFT JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
346350
-- left outer join + placement of clauses.
347351
-- clauses within the nullable side are not pulled up, but top level clause on
348352
-- non-nullable side is pushed into non-nullable side
@@ -360,10 +364,42 @@ SELECT t1.c1, t1.c2, t2.c1, t2.c2 FROM ft4 t1 LEFT JOIN (SELECT * FROM ft5 WHERE
360364
EXPLAIN (COSTS false, VERBOSE)
361365
SELECT t1.c1, t2.c1 FROM ft5 t1 RIGHT JOIN ft4 t2 ON (t1.c1 = t2.c1) ORDER BY t2.c1, t1.c1 OFFSET 10 LIMIT 10;
362366
SELECT t1.c1, t2.c1 FROM ft5 t1 RIGHT JOIN ft4 t2 ON (t1.c1 = t2.c1) ORDER BY t2.c1, t1.c1 OFFSET 10 LIMIT 10;
367+
-- right outer join three tables
368+
EXPLAIN (COSTS false, VERBOSE)
369+
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 RIGHT JOIN ft2 t2 ON (t1.c1 = t2.c1) RIGHT JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
370+
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 RIGHT JOIN ft2 t2 ON (t1.c1 = t2.c1) RIGHT JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
363371
-- full outer join
364372
EXPLAIN (COSTS false, VERBOSE)
365373
SELECT t1.c1, t2.c1 FROM ft4 t1 FULL JOIN ft5 t2 ON (t1.c1 = t2.c1) ORDER BY t1.c1, t2.c1 OFFSET 45 LIMIT 10;
366374
SELECT t1.c1, t2.c1 FROM ft4 t1 FULL JOIN ft5 t2 ON (t1.c1 = t2.c1) ORDER BY t1.c1, t2.c1 OFFSET 45 LIMIT 10;
375+
-- full outer join three tables
376+
EXPLAIN (COSTS false, VERBOSE)
377+
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 FULL JOIN ft2 t2 ON (t1.c1 = t2.c1) FULL JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
378+
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 FULL JOIN ft2 t2 ON (t1.c1 = t2.c1) FULL JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
379+
-- full outer join + right outer join
380+
EXPLAIN (COSTS false, VERBOSE)
381+
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 FULL JOIN ft2 t2 ON (t1.c1 = t2.c1) RIGHT JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
382+
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 FULL JOIN ft2 t2 ON (t1.c1 = t2.c1) RIGHT JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
383+
-- right outer join + full outer join
384+
EXPLAIN (COSTS false, VERBOSE)
385+
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 RIGHT JOIN ft2 t2 ON (t1.c1 = t2.c1) FULL JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
386+
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 RIGHT JOIN ft2 t2 ON (t1.c1 = t2.c1) FULL JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
387+
-- full outer join + left outer join
388+
EXPLAIN (COSTS false, VERBOSE)
389+
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 FULL JOIN ft2 t2 ON (t1.c1 = t2.c1) LEFT JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
390+
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 FULL JOIN ft2 t2 ON (t1.c1 = t2.c1) LEFT JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
391+
-- left outer join + full outer join
392+
EXPLAIN (COSTS false, VERBOSE)
393+
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 LEFT JOIN ft2 t2 ON (t1.c1 = t2.c1) FULL JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
394+
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 LEFT JOIN ft2 t2 ON (t1.c1 = t2.c1) FULL JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
395+
-- right outer join + left outer join
396+
EXPLAIN (COSTS false, VERBOSE)
397+
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 RIGHT JOIN ft2 t2 ON (t1.c1 = t2.c1) LEFT JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
398+
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 RIGHT JOIN ft2 t2 ON (t1.c1 = t2.c1) LEFT JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
399+
-- left outer join + right outer join
400+
EXPLAIN (COSTS false, VERBOSE)
401+
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 LEFT JOIN ft2 t2 ON (t1.c1 = t2.c1) RIGHT JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
402+
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 LEFT JOIN ft2 t2 ON (t1.c1 = t2.c1) RIGHT JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
367403
-- full outer join + WHERE clause, only matched rows
368404
EXPLAIN (COSTS false, VERBOSE)
369405
SELECT t1.c1, t2.c1 FROM ft4 t1 FULL JOIN ft5 t2 ON (t1.c1 = t2.c1) WHERE (t1.c1 = t2.c1 OR t1.c1 IS NULL) ORDER BY t1.c1, t2.c1 OFFSET 10 LIMIT 10;

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