Support CAGG names in chunk_detailed_size (#5839)

This patch adds support to pass continuous aggregate names to
`chunk_detailed_size` to align it to the behavior of other functions
such as `show_chunks`, `drop_chunks`, `hypertable_size`.

.unreleased/PR_5839

@@ -0,0 +1 @@
+Implements: #5839 Support CAGG names in chunk_detailed_size

sql/size_utils.sql

@@ -348,8 +348,18 @@ BEGIN
         INNER JOIN _timescaledb_catalog.hypertable ht ON (ht.schema_name = n.nspname AND ht.table_name = c.relname)
         WHERE c.OID = hypertable;
 
-		IF table_name IS NULL THEN
-		    RETURN;
+        IF table_name IS NULL THEN
+            SELECT h.schema_name, h.table_name, replication_factor > 0
+            INTO schema_name, table_name, is_distributed
+            FROM pg_class c
+            INNER JOIN pg_namespace n ON (n.OID = c.relnamespace)
+            INNER JOIN _timescaledb_catalog.continuous_agg a ON (a.user_view_schema = n.nspname AND a.user_view_name = c.relname)
+            INNER JOIN _timescaledb_catalog.hypertable h ON h.id = a.mat_hypertable_id
+            WHERE c.OID = hypertable;
+
+            IF table_name IS NULL THEN
+                RETURN;
+            END IF;
 		END IF;
 
         CASE WHEN is_distributed THEN

tsl/test/expected/size_utils_tsl.out

@@ -30,6 +30,11 @@ SELECT * FROM hypertable_detailed_size(:'MAT_HYPERTABLE_NAME') ORDER BY node_nam
            0 |        8192 |        8192 |       16384 | 
 (1 row)
 
+SELECT * FROM chunks_detailed_size(:'MAT_HYPERTABLE_NAME') ORDER BY node_name;
+ chunk_schema | chunk_name | table_bytes | index_bytes | toast_bytes | total_bytes | node_name 
+--------------+------------+-------------+-------------+-------------+-------------+-----------
+(0 rows)
+
 SELECT * FROM hypertable_size('hypersize_cagg');
  hypertable_size 
 -----------------
@@ -42,6 +47,11 @@ SELECT * FROM hypertable_detailed_size('hypersize_cagg') ORDER BY node_name;
            0 |        8192 |        8192 |       16384 | 
 (1 row)
 
+SELECT * FROM chunks_detailed_size('hypersize_cagg') ORDER BY node_name;
+ chunk_schema | chunk_name | table_bytes | index_bytes | toast_bytes | total_bytes | node_name 
+--------------+------------+-------------+-------------+-------------+-------------+-----------
+(0 rows)
+
 -- Test size functions on non-empty countinuous aggregate
 CALL refresh_continuous_aggregate('hypersize_cagg', NULL, NULL);
 SELECT * FROM hypertable_size('hypersize_cagg');
@@ -56,6 +66,12 @@ SELECT * FROM hypertable_detailed_size('hypersize_cagg') ORDER BY node_name;
         8192 |       24576 |       16384 |       49152 | 
 (1 row)
 
+SELECT * FROM chunks_detailed_size('hypersize_cagg') ORDER BY node_name;
+     chunk_schema      |    chunk_name    | table_bytes | index_bytes | toast_bytes | total_bytes | node_name 
+-----------------------+------------------+-------------+-------------+-------------+-------------+-----------
+ _timescaledb_internal | _hyper_2_2_chunk |        8192 |       16384 |        8192 |       32768 | 
+(1 row)
+
 SELECT * FROM hypertable_size(:'MAT_HYPERTABLE_NAME');
  hypertable_size 
 -----------------
@@ -68,3 +84,9 @@ SELECT * FROM hypertable_detailed_size(:'MAT_HYPERTABLE_NAME') ORDER BY node_nam
         8192 |       24576 |       16384 |       49152 | 
 (1 row)
 
+SELECT * FROM chunks_detailed_size(:'MAT_HYPERTABLE_NAME') ORDER BY node_name;
+     chunk_schema      |    chunk_name    | table_bytes | index_bytes | toast_bytes | total_bytes | node_name 
+-----------------------+------------------+-------------+-------------+-------------+-------------+-----------
+ _timescaledb_internal | _hyper_2_2_chunk |        8192 |       16384 |        8192 |       32768 | 
+(1 row)
+

tsl/test/sql/size_utils_tsl.sql

@@ -17,13 +17,16 @@ WHERE user_view_name = 'hypersize_cagg'
 
 SELECT * FROM hypertable_size(:'MAT_HYPERTABLE_NAME');
 SELECT * FROM hypertable_detailed_size(:'MAT_HYPERTABLE_NAME') ORDER BY node_name;
+SELECT * FROM chunks_detailed_size(:'MAT_HYPERTABLE_NAME') ORDER BY node_name;
 SELECT * FROM hypertable_size('hypersize_cagg');
 SELECT * FROM hypertable_detailed_size('hypersize_cagg') ORDER BY node_name;
+SELECT * FROM chunks_detailed_size('hypersize_cagg') ORDER BY node_name;
 
 -- Test size functions on non-empty countinuous aggregate
 CALL refresh_continuous_aggregate('hypersize_cagg', NULL, NULL);
 SELECT * FROM hypertable_size('hypersize_cagg');
 SELECT * FROM hypertable_detailed_size('hypersize_cagg') ORDER BY node_name;
+SELECT * FROM chunks_detailed_size('hypersize_cagg') ORDER BY node_name;
 SELECT * FROM hypertable_size(:'MAT_HYPERTABLE_NAME');
 SELECT * FROM hypertable_detailed_size(:'MAT_HYPERTABLE_NAME') ORDER BY node_name;
-
+SELECT * FROM chunks_detailed_size(:'MAT_HYPERTABLE_NAME') ORDER BY node_name;