Partition by list (substr(col_name,1,4)) possible?

Hi,
Can we partition table by list based on function not just column?
partition by list (substr(column_name,1,4))
-Thanks
Regards,
Chan.

Raj,
No. But email me for an alternative solution at [email protected]
Did you know something what we ignore and that you don't want to share here ?
Nicolas.

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Is it posibble with Oracle 11gR2 automatic partition creation by list?
Or is it possible only by range?
What I need is that whenever a new value (partitioned key) is inserted in a partitioned table, Oracle automatically creates a new partition based on that new value.
Thanks

Interval partitioning currently only supports range partitions, and must be based on a column of number or date type.
http://download.oracle.com/docs/cd/E11882_01/server.112/e16541/part_admin001.htm#VLDBG1088
http://download.oracle.com/docs/cd/E11882_01/server.112/e16541/part_avail.htm#VLDBG1279

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Hi,
Can I create a table having partition by LIST and also subpartition by LIST.
If we can then please provide a syntax or otherwise if we can't then please provide a valid reason for it.
Regards,
Koushik

You can have list-list composite partitioning in 11G, not before that.
http://download.oracle.com/docs/cd/B28359_01/server.111/b28318/partconc.htm#BCGJEEGJ
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hi All,
      i have a table partitioned by hash(8 segments) with 200 millions records . now we want to move to list partition the same table by state.
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Hi
I am trying to create the Range(Interval) Partition with List Sub partition (dynamically). Here the LOCATION_CD List is Dynamic. Basically Location_CD is Country name. e.g USA, IND,GER.....
Below Works good...
CREATE TABLE TEMP
SEQUENCE_ID NUMBER,
RESERVATION_DATE TIMESTAMP,
LOCATION_CD VARCHAR2(5)
PARTITION BY RANGE (RESERVATION_DATE)
INTERVAL (NUMTOYMINTERVAL(1,'MONTH'))
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But at the same time can the new list sub partition be added ? If this doesn't work...can we have another alternative approach or partition technique ?
Please suggest.
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Why didn't you just perform two inserts and answer the question yourself?
orabase> CREATE TABLE T (
2 SEQUENCE_ID      NUMBER,
3 RESERVATION_DATE TIMESTAMP,
4 LOCATION_CD      VARCHAR2(5))
5 PARTITION BY RANGE (RESERVATION_DATE)
6 INTERVAL (NUMTOYMINTERVAL(1,'MONTH'))
7 SUBPARTITION BY LIST(LOCATION_CD)
8 SUBPARTITION TEMPLATE (
9 SUBPARTITION CD_01 VALUES ('USA'),
10 SUBPARTITION CD_02 VALUES ('IND'),
11 SUBPARTITION CD_03 VALUES ('GER')) (
12 PARTITION root values LESS THAN (TO_DATE('01-JAN-2000','DD-MON-YYYY')));
Table created.
orabase> insert into t values (1, TO_DATE('02-JAN-2000'), 'USA');
1 row created.
orabase> select partition_name, subpartition_name
2 from user_tab_subpartitions
3 where table_name = 'T';
PARTITION_NAME                 SUBPARTITION_NAME
ROOT                           ROOT_CD_03
ROOT                           ROOT_CD_02
ROOT                           ROOT_CD_01
SYS_P84                        SYS_SUBP83
SYS_P84                        SYS_SUBP82
SYS_P84                        SYS_SUBP81
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orabase> insert into t values (1, TO_DATE('02-JAN-2000')+400, 'USA');
1 row created.
orabase> select partition_name, subpartition_name
2 from user_tab_subpartitions
3 where table_name = 'T';
PARTITION_NAME                 SUBPARTITION_NAME
SYS_P88                        SYS_SUBP85
SYS_P88                        SYS_SUBP86
SYS_P88                        SYS_SUBP87
SYS_P84                        SYS_SUBP81
SYS_P84                        SYS_SUBP82
SYS_P84                        SYS_SUBP83
ROOT                           ROOT_CD_01
ROOT                           ROOT_CD_02
ROOT                           ROOT_CD_03
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Partitioning by list

Which is the recommended way to partition by list:
a) Put each list partition on a separate tablespace
or
b) Put all the list partitions on the same tablespace?
What is the difference between the two?

Difference between the two is the fact that you're keeping data in separate datafiles using separate TS. Benefit of using separate TS for partition are
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In app run if no list generated what are the possible causes

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Hi
1. no due date open items are not availabe for that vendor.
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Current list of traded in games possible?

Often times when I do trade ins, my local bby, doesn't give me a receipt and at least once failed to give me my 10% bonus and 2x rewards points.
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Any practical experience with composite partitioning range/list?

Hi,
I'm working on Oracle 9.2.0.4 and I plan to migrate several large range partitioned tables into range/list partitioned tables. I was wondering I anybody has some practical experience with this new feature (range/list composite partitioning) and if he encountered any bugs or "undocumented features" ?
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Hash partitioning v. list partitioning on surrogate key + partition pruning

Hi,
Have a large fact table with surrogate keys, therefore queries are of form
select dimension.attribute..
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user5716448 wrote:
Hi,
Version 11.2.0.1
fact table structure
PRODUCT_ID NUMBER
RETAILER_ID NUMBER
OUTLET_ID NUMBER
CALENDAR_ID NUMBER
BRANCH_ID NUMBER
PUBLISHER_ID NUMBER
DISTRIBUTOR_ID NUMBER
TRANS_TYPE_ID NUMBER
TRANS_QTY NUMBER (10)
TRANS_VALUE (10,4)
No date on fact table (just surrogate_id for calendar whihc links to calendar/date dimension.
Although queries can be by date of transaction, most aren't.
Potential to grow to 3 billion rows.
Considering hash partitioning on the product_id, simply to break data down and product_id is the largest dimension.About hash partitioning – in this case it is probably all about the ability to run in parallel. Do not have any info on that, so I cannot comment further.
>
sqls are varied, lots of different types some query all dimensions, sometimes a few. Not the straightforward date examples in the manual.You can pick a dimension that is frequently used by the SQLs. I understand that there is no perfect one, but even if you pick just a “good” one you might have a good deal of partition elimination.
>
Users run 3rd part ad-hoc reporting layer which has to allow them to report against the star in any way they want.
Star transformation hint enabled. Have heard in deciding number of hash partitions, partition size should geneerally be < 2gb.
e.g transactions for a given product for customers belonging to a given multiple in a given week
select trans_qty, trans_value, m.prod_name, m.prod_num, r.cust_name, w.branch_name, rtt.trans_date, rtt,trans_type
from retailer_transaction rt, media m, wholesaler w, calendar c, retailer r, trans_type rtt
where rt.issue_id = m.dimension_key
and m.prod_num = 600
and rt.branch_id = w.dimension_key
and rt.outlet_id = r.dimension_key
and r.multiple_num = 700
and rt.calendar_id = calendar.dimension_key
and m.issue_year_week = 201110
and rt.trans_type_id = rtt.dimension_keyLastly, you need to focus on weather and how to partition your indexes (I assume you have bunch of bitmaps). This decision is at least as important as partitioning the table.

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Partition by list (substr(col_name,1,4)) possible?

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