Leadingヒントの重複に関する試験(L-3-4-*)を追加した。

diff --git a/expected/ut-L.out b/expected/ut-L.out
index 3e61a8d..4984556 100644 (file)
--- a/expected/ut-L.out
+++ b/expected/ut-L.out
@@ -3906,3 +3906,146 @@ error hint:
                ->  Seq Scan on p2c3c2 t3
 (18 rows)
 
+----
+---- No. L-3-4 conflict leading hint
+----
+-- No. L-3-4-1
+EXPLAIN (COSTS false) SELECT * FROM s1.t1
+  JOIN s1.t2 ON (t1.c1 = t2.c1)
+  JOIN s1.t3 ON (t1.c1 = t3.c1);
+                QUERY PLAN                
+------------------------------------------
+ Merge Join
+   Merge Cond: (t1.c1 = t2.c1)
+   ->  Merge Join
+         Merge Cond: (t1.c1 = t3.c1)
+         ->  Index Scan using t1_i1 on t1
+         ->  Index Scan using t3_i1 on t3
+   ->  Sort
+         Sort Key: t2.c1
+         ->  Seq Scan on t2
+(9 rows)
+
+/*+Leading(t2 t3 t1)Leading(t1 t2 t3)*/
+EXPLAIN (COSTS false) SELECT * FROM s1.t1
+  JOIN s1.t2 ON (t1.c1 = t2.c1)
+  JOIN s1.t3 ON (t1.c1 = t3.c1);
+INFO:  hint syntax error at or near "Leading(t2 t3 t1)Leading(t1 t2 t3)"
+DETAIL:  Conflict leading hint.
+LOG:  pg_hint_plan:
+used hint:
+Leading(t1 t2 t3)
+not used hint:
+duplication hint:
+Leading(t2 t3 t1)
+error hint:
+
+                   QUERY PLAN                   
+------------------------------------------------
+ Hash Join
+   Hash Cond: (t3.c1 = t1.c1)
+   ->  Seq Scan on t3
+   ->  Hash
+         ->  Merge Join
+               Merge Cond: (t1.c1 = t2.c1)
+               ->  Index Scan using t1_i1 on t1
+               ->  Sort
+                     Sort Key: t2.c1
+                     ->  Seq Scan on t2
+(10 rows)
+
+-- No. L-3-4-2
+/*+Leading(t3 t1 t2)Leading(t2 t3 t1)Leading(t1 t2 t3)*/
+EXPLAIN (COSTS false) SELECT * FROM s1.t1
+  JOIN s1.t2 ON (t1.c1 = t2.c1)
+  JOIN s1.t3 ON (t1.c1 = t3.c1);
+INFO:  hint syntax error at or near "Leading(t3 t1 t2)Leading(t2 t3 t1)Leading(t1 t2 t3)"
+DETAIL:  Conflict leading hint.
+INFO:  hint syntax error at or near "Leading(t2 t3 t1)Leading(t1 t2 t3)"
+DETAIL:  Conflict leading hint.
+LOG:  pg_hint_plan:
+used hint:
+Leading(t1 t2 t3)
+not used hint:
+duplication hint:
+Leading(t3 t1 t2)
+Leading(t2 t3 t1)
+error hint:
+
+                   QUERY PLAN                   
+------------------------------------------------
+ Hash Join
+   Hash Cond: (t3.c1 = t1.c1)
+   ->  Seq Scan on t3
+   ->  Hash
+         ->  Merge Join
+               Merge Cond: (t1.c1 = t2.c1)
+               ->  Index Scan using t1_i1 on t1
+               ->  Sort
+                     Sort Key: t2.c1
+                     ->  Seq Scan on t2
+(10 rows)
+
+-- No. L-3-4-3
+/*+Leading(t2 t3 t1)Leading()*/
+EXPLAIN (COSTS false) SELECT * FROM s1.t1
+  JOIN s1.t2 ON (t1.c1 = t2.c1)
+  JOIN s1.t3 ON (t1.c1 = t3.c1);
+INFO:  hint syntax error at or near "Leading()"
+DETAIL:  In Leading hint, specified relation name 2 or more.
+INFO:  hint syntax error at or near "Leading(t2 t3 t1)Leading()"
+DETAIL:  Conflict leading hint.
+LOG:  pg_hint_plan:
+used hint:
+not used hint:
+duplication hint:
+Leading(t2 t3 t1)
+error hint:
+Leading()
+
+                QUERY PLAN                
+------------------------------------------
+ Merge Join
+   Merge Cond: (t1.c1 = t2.c1)
+   ->  Merge Join
+         Merge Cond: (t1.c1 = t3.c1)
+         ->  Index Scan using t1_i1 on t1
+         ->  Index Scan using t3_i1 on t3
+   ->  Sort
+         Sort Key: t2.c1
+         ->  Seq Scan on t2
+(9 rows)
+
+-- No. L-3-4-4
+/*+Leading(t3 t1 t2)Leading(t2 t3 t1)Leading()*/
+EXPLAIN (COSTS false) SELECT * FROM s1.t1
+  JOIN s1.t2 ON (t1.c1 = t2.c1)
+  JOIN s1.t3 ON (t1.c1 = t3.c1);
+INFO:  hint syntax error at or near "Leading()"
+DETAIL:  In Leading hint, specified relation name 2 or more.
+INFO:  hint syntax error at or near "Leading(t3 t1 t2)Leading(t2 t3 t1)Leading()"
+DETAIL:  Conflict leading hint.
+INFO:  hint syntax error at or near "Leading(t2 t3 t1)Leading()"
+DETAIL:  Conflict leading hint.
+LOG:  pg_hint_plan:
+used hint:
+not used hint:
+duplication hint:
+Leading(t3 t1 t2)
+Leading(t2 t3 t1)
+error hint:
+Leading()
+
+                QUERY PLAN                
+------------------------------------------
+ Merge Join
+   Merge Cond: (t1.c1 = t2.c1)
+   ->  Merge Join
+         Merge Cond: (t1.c1 = t3.c1)
+         ->  Index Scan using t1_i1 on t1
+         ->  Index Scan using t3_i1 on t3
+   ->  Sort
+         Sort Key: t2.c1
+         ->  Seq Scan on t2
+(9 rows)
+

diff --git a/sql/ut-L.sql b/sql/ut-L.sql
index 21e57a4..eabefe5 100644 (file)
--- a/sql/ut-L.sql
+++ b/sql/ut-L.sql
@@ -594,3 +594,35 @@ EXPLAIN (COSTS false) SELECT * FROM s1.p2c1 t1
 EXPLAIN (COSTS false) SELECT * FROM s1.p2c1 t1
   JOIN s1.p2c2 t2 ON (t1.c1 = t2.c1)
   JOIN s1.p2c3 t3 ON (t1.c1 = t3.c1);
+
+----
+---- No. L-3-4 conflict leading hint
+----
+
+-- No. L-3-4-1
+EXPLAIN (COSTS false) SELECT * FROM s1.t1
+  JOIN s1.t2 ON (t1.c1 = t2.c1)
+  JOIN s1.t3 ON (t1.c1 = t3.c1);
+/*+Leading(t2 t3 t1)Leading(t1 t2 t3)*/
+EXPLAIN (COSTS false) SELECT * FROM s1.t1
+  JOIN s1.t2 ON (t1.c1 = t2.c1)
+  JOIN s1.t3 ON (t1.c1 = t3.c1);
+
+-- No. L-3-4-2
+/*+Leading(t3 t1 t2)Leading(t2 t3 t1)Leading(t1 t2 t3)*/
+EXPLAIN (COSTS false) SELECT * FROM s1.t1
+  JOIN s1.t2 ON (t1.c1 = t2.c1)
+  JOIN s1.t3 ON (t1.c1 = t3.c1);
+
+-- No. L-3-4-3
+/*+Leading(t2 t3 t1)Leading()*/
+EXPLAIN (COSTS false) SELECT * FROM s1.t1
+  JOIN s1.t2 ON (t1.c1 = t2.c1)
+  JOIN s1.t3 ON (t1.c1 = t3.c1);
+
+-- No. L-3-4-4
+/*+Leading(t3 t1 t2)Leading(t2 t3 t1)Leading()*/
+EXPLAIN (COSTS false) SELECT * FROM s1.t1
+  JOIN s1.t2 ON (t1.c1 = t2.c1)
+  JOIN s1.t3 ON (t1.c1 = t3.c1);
+