2026-03-12 21:01:38

2026-03-12 22:01:38 +01:00
parent 3bd1db26cc
commit 26296b6d6a
336 changed files with 27507 additions and 0 deletions
--- a/partitioning/range_to_interval_01.txt
+++ b/partitioning/range_to_interval_01.txt
@@ -0,0 +1,126 @@
+-- http://www.oraclefindings.com/2017/07/23/switching-range-interval-partitioning/
+
+drop table DEMO purge;
+
+create table DEMO(
+	 id INTEGER generated always as identity
+	,day DATE not null
+	,code VARCHAR2(2) not null
+	,val NUMBER not null
+	,PRIMARY KEY(id)
+) 
+partition by range(day)(
+      partition P_2024_01 values less than (date'2024-02-01')
+     ,partition P_2024_02 values less than (date'2024-03-01')
+     ,partition INFINITY  values less than (MAXVALUE)
+    )
+;
+
+create index IDX_VAL on DEMO(val) local;
+
+
+insert into DEMO (day,code,val) values (date'2024-01-09','UK',1005);
+insert into DEMO (day,code,val) values (date'2024-01-10','IT',900);
+insert into DEMO (day,code,val) values (date'2024-01-11','IT',400);
+insert into DEMO (day,code,val) values (date'2024-01-11','FR',400);
+insert into DEMO (day,code,val) values (date'2024-01-12','UK',400);
+insert into DEMO (day,code,val) values (date'2024-01-12','IT',500);
+
+insert into DEMO (day,code,val) values (date'2024-02-07','UK',765);
+insert into DEMO (day,code,val) values (date'2024-02-09','IT',551);
+insert into DEMO (day,code,val) values (date'2024-02-09','IT',90);
+insert into DEMO (day,code,val) values (date'2024-02-09','FR',407);
+insert into DEMO (day,code,val) values (date'2024-02-09','UK',101);
+insert into DEMO (day,code,val) values (date'2024-02-10','IT',505);
+insert into DEMO (day,code,val) values (date'2024-02-10','FR',2000);
+
+commit;
+
+
+exec dbms_stats.gather_table_stats(user,'DEMO');
+exec dbms_stats.delete_table_stats(user,'DEMO');
+
+-- IMPORTANT: the table should NOT have a MAXVALUE partition
+-- ALTER TABLE… SET INTERVAL fails with: ORA-14759: SET INTERVAL is not legal on this table. (Doc ID 2926948.1)
+
+select count(*) from DEMO partition (INFINITY);
+-- Drop the MAXVALUE partition.
+alter table POC.DEMO drop partition INFINITY;
+
+alter table DEMO set interval(NUMTOYMINTERVAL(1, 'MONTH'));
+
+insert into DEMO (day,code,val) values (date'2024-04-01','IT',50);
+insert into DEMO (day,code,val) values (date'2024-05-12','FR',60);
+insert into DEMO (day,code,val) values (date'2024-05-14','UK',70);
+commit;
+
+
+-------------------------------------------------------------
+
+drop table DEMO purge;
+
+create table DEMO(
+	 id INTEGER generated always as identity
+	,day DATE not null
+	,code VARCHAR2(2) not null
+	,val NUMBER not null
+	,PRIMARY KEY(id)
+) 
+partition by range(day) subpartition by list (code)(
+      partition P_2024_01 values less than (date'2024-02-01')
+      	(
+      		 subpartition P_2024_01_UK values ('UK')    
+  			,subpartition P_2024_01_IT values ('IT')    
+  			,subpartition P_2024_01_FR values ('FR')    
+  		)    
+     ,partition P_2024_02 values less than (date'2024-03-01')
+      	(
+      		 subpartition P_2024_02_UK values ('UK')    
+  			,subpartition P_2024_02_IT values ('IT')    
+  			,subpartition P_2024_02_FR values ('FR')    
+  		)    
+     ,partition INFINITY  values less than (MAXVALUE)
+      	(
+      		 subpartition INFINITY_UK values ('UK')    
+  			,subpartition INFINITY_IT values ('IT')    
+  			,subpartition INFINITY_FR values ('FR')    
+  		)    
+    )
+;
+
+create index IDX_VAL on DEMO(val) local;
+
+alter table POC.DEMO drop partition INFINITY;
+alter table DEMO set interval(NUMTOYMINTERVAL(1, 'MONTH'));
+
+alter index POC.SYS_C007367 rebuild;
+
+
+ALTER TABLE DEMO SPLIT SUBPARTITION SYS_SUBP3241
+  VALUES ('UK') INTO (
+	SUBPARTITION SYS_SUBP3241_UK,
+    SUBPARTITION SYS_SUBP3241_DIFF
+  ) 
+  ONLINE;
+
+ALTER TABLE DEMO SPLIT SUBPARTITION SYS_SUBP3241_DIFF
+  VALUES ('IT') INTO (
+	SUBPARTITION SYS_SUBP3241_IT,
+    SUBPARTITION SYS_SUBP3241_FR
+  ) 
+  ONLINE;
+
+-- because wrong previous subpart name
+alter table POC.DEMO rename subpartition SYS_SUBP3241_FR to SYS_SUBP3241_DIFF; 
+
+ALTER TABLE DEMO SPLIT SUBPARTITION SYS_SUBP3241_DIFF
+  VALUES ('FR') INTO (
+	SUBPARTITION SYS_SUBP3241_FR,
+    SUBPARTITION SYS_SUBP3241_OTHER
+  ) 
+  ONLINE;
+
+select count(*) from DEMO subpartition(SYS_SUBP3241_OTHER);
+alter table DEMO drop subpartition SYS_SUBP3241_OTHER;
+
+