!3637 修复pg_stat_系列函数无法获取分区信息

Merge pull request !3637 from xiyanziran/master-pgstat_part

src/common/backend/utils/adt/pgstatfuncs.cpp

@@ -711,6 +711,9 @@ void pg_stat_get_stat_list(List** stat_list, uint32* statFlag_ref, Oid relid)
     } else if (isPartitionedObject(relid, RELKIND_INDEX, true)) {
         *statFlag_ref = relid;
         *stat_list = getPartitionObjectIdList(relid, PART_OBJ_TYPE_INDEX_PARTITION);
+    } else if (isPartitionObject(relid, PART_OBJ_TYPE_TABLE_PARTITION, true)) {
+        *statFlag_ref = partid_get_parentid(relid);
+        *stat_list = list_make1_oid(relid);
     } else {
         *statFlag_ref = InvalidOid;
         *stat_list = list_make1_oid(relid);

src/test/regress/expected/hw_partition_hash_dml.out

@@ -306,6 +306,26 @@ select * from test_index_ht order by 1;
  6 |   |  
 (4 rows)
 
+create table tab_hash(c1 number, c2 number,c3 varchar2(20)) partition by hash(c2)(
+partition p1,
+partition p2,
+partition p3,
+partition p4,
+partition p5
+);
+insert into tab_hash select t,t,t from generate_series(1,10) t;
+analyse tab_hash;
+select relname, pg_stat_get_live_tuples(oid) live_tuples from pg_partition
+where parentid='tab_hash'::regclass and parttype='p' order by relname;
+ relname | live_tuples 
+---------+-------------
+ p1      |           3
+ p2      |           2
+ p3      |           2
+ p4      |           2
+ p5      |           1
+(5 rows)
+
 drop table test_index_ht;
 drop schema fvt_other_cmd cascade;
 NOTICE:  drop cascades to table fvt_other_cmd.idex_list_partition_table_001

src/test/regress/sql/hw_partition_hash_dml.sql

@@ -169,5 +169,18 @@ set enable_seqscan = off;
 set enable_bitmapscan = off;
 explain (costs off, verbose on) select * from test_index_ht order by 1;
 select * from test_index_ht order by 1;
+
+create table tab_hash(c1 number, c2 number,c3 varchar2(20)) partition by hash(c2)(
+partition p1,
+partition p2,
+partition p3,
+partition p4,
+partition p5
+);
+insert into tab_hash select t,t,t from generate_series(1,10) t;
+analyse tab_hash;
+select relname, pg_stat_get_live_tuples(oid) live_tuples from pg_partition
+where parentid='tab_hash'::regclass and parttype='p' order by relname;
+
 drop table test_index_ht;
 drop schema fvt_other_cmd cascade;