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_02
+++ b/partitioning/range_to_interval_02
@@ -0,0 +1,93 @@
+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 P_2024_03 values less than (date'2024-04-01')
+     ,partition P_2024_04 values less than (date'2024-05-01')
+     ,partition P_2024_05 values less than (date'2024-06-01')
+     ,partition P_2024_06 values less than (date'2024-07-01')
+     ,partition INFINITY  values less than (MAXVALUE)
+    )
+;
+
+create index IDX_VAL on DEMO(val) local;
+
+insert /*+ APPEND */ into DEMO (day,code,val)
+select
+	 DATE'2024-01-01' + trunc(DBMS_RANDOM.VALUE(1,30*4))
+	,DECODE(trunc(DBMS_RANDOM.VALUE(1,10)),
+		 1,  'UK'
+		,2,  'UK'
+		,3,  'UK'
+		,4,  'UK'
+		,5,  'UK'
+		,6,  'IT'
+		,7,  'IT'
+		,8,  'FR'
+		,9,  'FR'
+		,10, 'FR'
+	)
+	,trunc(DBMS_RANDOM.VALUE(1,10000))
+from 
+	xmltable('1 to 4000000')
+;
+
+commit;
+
+
+exec dbms_stats.gather_table_stats(user,'DEMO');
+exec dbms_stats.delete_table_stats(user,'DEMO');
+
+exec DBMS_STATS.SET_TABLE_PREFS(ownname=>'POC',tabname=>'DEMO', pname=>'INCREMENTAL', pvalue=>'TRUE');
+exec DBMS_STATS.SET_TABLE_PREFS(ownname=>'POC',tabname=>'DEMO', pname=>'GRANULARITY', pvalue=>'PARTITION');
+
+exec DBMS_STATS.SET_TABLE_PREFS(ownname=>'POC',tabname=>'DEMO', pname=>'INCREMENTAL', pvalue=>'FALSE');
+exec DBMS_STATS.SET_TABLE_PREFS(ownname=>'POC',tabname=>'DEMO', pname=>'GRANULARITY', pvalue=>'AUTO');
+
+
+execute dbms_stats.gather_table_stats(ownname=>'POC',tabname=>'DEMO', partname=>'P_2024_01');
+
+execute dbms_stats.delete_table_stats(ownname=>'POC',tabname=>'DEMO', partname=>'P_2024_06');
+execute dbms_stats.gather_table_stats(ownname=>'POC',tabname=>'DEMO', partname=>'P_2024_06');
+execute dbms_stats.gather_table_stats(ownname=>'POC',tabname=>'DEMO', partname=>'P_2024_06',granularity=>'PARTITION');
+
+
+alter table POC.DEMO drop partition P_2024_05 update global indexes;
+alter table POC.DEMO drop partition P_2024_06 update global indexes;
+alter table POC.DEMO drop partition INFINITY update global indexes;
+
+alter table DEMO set interval(NUMTOYMINTERVAL(1, 'MONTH'));
+
+insert /*+ APPEND */ into DEMO (day,code,val)
+select
+	 DATE'2024-07-01' + trunc(DBMS_RANDOM.VALUE(1,30*1))
+	,DECODE(trunc(DBMS_RANDOM.VALUE(1,10)),
+		 1,  'UK'
+		,2,  'UK'
+		,3,  'UK'
+		,4,  'UK'
+		,5,  'UK'
+		,6,  'IT'
+		,7,  'IT'
+		,8,  'FR'
+		,9,  'FR'
+		,10, 'FR'
+	)
+	,trunc(DBMS_RANDOM.VALUE(1,10000))
+from 
+	xmltable('1 to 1000000')
+;
+
+commit;
+
+
+
+