Dragnet selection: Show partitioning details

rammpeter · Sep 18, 2023 · f52d0ec · f52d0ec
1 parent 35d16ba
commit f52d0ec
Showing 1 changed file with 31 additions and 20 deletions.
diff --git a/app/helpers/dragnet/unused_tables_helper.rb b/app/helpers/dragnet/unused_tables_helper.rb
@@ -237,28 +237,39 @@ def unused_tables
           :name  => t(:dragnet_helper_169_name, default: 'Empty partitions or subpartitions'),
           :desc  => t(:dragnet_helper_169_desc, default: "Empty partitions or subpartitions are possibly not necessary and could be dropped."),
           :sql=> "\
-WITH Tab_SubPartitions AS (SELECT /*+ NO_MERGE MATERIALIZE */ Table_Owner, Table_Name, Partition_Name, SubPartition_Name, Num_Rows, Interval  FROM DBA_Tab_SubPartitions),
-     Tab_Partitions    AS (SELECT /*+ NO_MERGE MATERIALIZE */ Table_Owner, Table_Name, Partition_Name, Num_Rows, Interval                     FROM DBA_Tab_Partitions),
+WITH Tab_SubPartitions AS (SELECT /*+ NO_MERGE MATERIALIZE */ Table_Owner, Table_Name, Partition_Name, SubPartition_Name, Num_Rows, Interval, Last_Analyzed
+                           FROM   DBA_Tab_SubPartitions),
+     Tab_Partitions    AS (SELECT /*+ NO_MERGE MATERIALIZE */ Table_Owner, Table_Name, Partition_Name, Num_Rows, Interval, Last_Analyzed
+                           FROM   DBA_Tab_Partitions),
      Tab_Modifications AS (SELECT /*+ NO_MERGE MATERIALIZE */ Table_Owner, Table_Name, Partition_Name, SubPartition_Name, Inserts, Deletes    FROM DBA_Tab_Modifications WHERE Partition_Name IS NOT NULL),
-     Segments          AS (SELECT /*+ NO_MERGE MATERIALIZE */ Owner, Segment_Name, Partition_Name, Bytes                                      FROM DBA_Segments WHERE Partition_Name IS NOT NULL)
-SELECT Table_Owner, Table_Name, Type, COUNT(*) Empty_Partition_Count, ROUND(SUM(Bytes)/(1024*1024), 2) MBytes,
-       SUM(Num_Rows) Num_Rows_At_Analyze,
-       SUM(Inserts) Inserts_since_Analyze,
-       SUM(Deletes) Deletes_since_Analyze
+     Segments          AS (SELECT /*+ NO_MERGE MATERIALIZE */ Owner, Segment_Name, Partition_Name, Bytes                                      FROM DBA_Segments WHERE Partition_Name IS NOT NULL),
+     Part_Tables       AS (SELECT /*+ NO_MERGE MATERIALIZE */ Owner, Table_Name, Partitioning_Type, SubPartitioning_Type, Interval
+                                  #{', AutoList, Interval_SubPartition, AutoList_SubPartition' if get_db_version >= '12.2'}
+                           FROM   DBA_Part_Tables)
+SELECT x.*, pt.Partitioning_Type, pt.SubPartitioning_Type, pt.Interval #{' ,pt.AutoList, pt.Interval_SubPartition, pt.AutoList_SubPartition' if get_db_version >= '12.2'}
 FROM   (
-        SELECT 'SUBPARTITION' Type, p.Table_Owner, p.Table_Name, p.Num_Rows, p.Interval, NVL(m.Inserts, 0) Inserts, NVL(m.Deletes, 0) Deletes, s.Bytes
-        FROM   Tab_SubPartitions p
-        JOIN   Segments s ON s.Owner = p.Table_Owner AND s.Segment_Name = p.Table_Name AND s.Partition_Name = p.SubPartition_Name
-        LEFT OUTER JOIN Tab_Modifications m ON m.Table_Owner = p.Table_Owner AND m.Table_Name = p.Table_Name AND m.Partition_Name = p.Partition_Name AND m.SubPartition_Name = p.SubPartition_Name
-        UNION ALL
-        SELECT 'PARTITION' Type, p.Table_Owner, p.Table_Name, p.Num_Rows, p.Interval, NVL(m.Inserts, 0) Inserts, NVL(m.Deletes, 0) Deletes, s.Bytes
-        FROM   Tab_Partitions p
-        JOIN   Segments s ON s.Owner = p.Table_Owner AND s.Segment_Name = p.Table_Name AND s.Partition_Name = p.Partition_Name
-        LEFT OUTER JOIN Tab_Modifications m ON m.Table_Owner = p.Table_Owner AND m.Table_Name = p.Table_Name AND m.Partition_Name = p.Partition_Name AND m.SubPartition_Name IS NULL
-       )
-WHERE  Deletes >= NVL(Num_Rows, 0) + Inserts /* Num_Rows = 0 or all inserted rows are deleted */
-AND    Table_Owner NOT IN (#{system_schema_subselect})
-GROUP BY Table_Owner, Table_Name, Type
+        SELECT Table_Owner, Table_Name, Type, COUNT(*) Empty_Partition_Count, ROUND(SUM(Bytes)/(1024*1024), 2) MBytes,
+               SUM(Num_Rows) Num_Rows_At_Analyze,
+               SUM(Inserts) Inserts_since_Analyze,
+               SUM(Deletes) Deletes_since_Analyze,
+               MIN(Last_Analyzed) Min_Last_Analyzed,
+               MAX(Last_Analyzed) Max_Last_Analyzed
+        FROM   (
+                SELECT 'SUBPARTITION' Type, p.Table_Owner, p.Table_Name, p.Num_Rows, p.Interval, NVL(m.Inserts, 0) Inserts, NVL(m.Deletes, 0) Deletes, s.Bytes, Last_Analyzed
+                FROM   Tab_SubPartitions p
+                JOIN   Segments s ON s.Owner = p.Table_Owner AND s.Segment_Name = p.Table_Name AND s.Partition_Name = p.SubPartition_Name
+                LEFT OUTER JOIN Tab_Modifications m ON m.Table_Owner = p.Table_Owner AND m.Table_Name = p.Table_Name AND m.Partition_Name = p.Partition_Name AND m.SubPartition_Name = p.SubPartition_Name
+                UNION ALL
+                SELECT 'PARTITION' Type, p.Table_Owner, p.Table_Name, p.Num_Rows, p.Interval, NVL(m.Inserts, 0) Inserts, NVL(m.Deletes, 0) Deletes, s.Bytes, Last_Analyzed
+                FROM   Tab_Partitions p
+                JOIN   Segments s ON s.Owner = p.Table_Owner AND s.Segment_Name = p.Table_Name AND s.Partition_Name = p.Partition_Name
+                LEFT OUTER JOIN Tab_Modifications m ON m.Table_Owner = p.Table_Owner AND m.Table_Name = p.Table_Name AND m.Partition_Name = p.Partition_Name AND m.SubPartition_Name IS NULL
+               )
+        WHERE  Deletes >= NVL(Num_Rows, 0) + Inserts /* Num_Rows = 0 or all inserted rows are deleted */
+        AND    Table_Owner NOT IN (#{system_schema_subselect})
+        GROUP BY Table_Owner, Table_Name, Type
+       ) x
+JOIN   Part_Tables pt ON pt.Owner = x.Table_Owner AND pt.Table_Name = x.Table_Name
 ORDER BY MBytes DESC
           ",
         },