RE: Spam:range partition issue

From: "Ric Van Dyke" <ric.van.dyke@xxxxxxxxxx>
To: <Harvinder.Singh@xxxxxxxxxxxxx>, <oracle-l@xxxxxxxxxxxx>, <oracle-l@xxxxxxxxxxxxx>
Date: Wed, 14 Nov 2007 15:17:40 -0600

Oracle compares from left to right and stops when it has a match:

 

First row: 897515520,1200000  The first value is less then or equal to
the first key of the partition, so it goes in that partition.

 

Second row: 897515520,1600000 The first value is less then or equal to
the first key of the partition, so it goes in that partition.

 

In both cases it never even looks at the second value.  I forget the
name of this mechanism but it's the way it works. 

 

-----------------------

Ric Van Dyke

Hotsos Enterprises

-----------------------

 

________________________________

From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Harvinder Singh
Sent: Wednesday, November 14, 2007 3:37 PM
To: oracle-l@xxxxxxxxxxxx; oracle-l@xxxxxxxxxxxxx
Subject: Spam:range partition issue

 

Hi,

 

I am creating range partitioning on 2 columns as following:

 

CREATE TABLE test_part

(

Col1             NUMBER(10)                 NOT NULL,

Col2  NUMBER(10)                 NOT NULL

)

TABLESPACE tab_1

PARTITION BY RANGE (ID_USAGE_INTERVAL, ID_ACC) 

(  

  PARTITION USAGE_1 VALUES LESS THAN (897515520, 1500000)

    TABLESPACE tab_2,  

  PARTITION USAGE_2 VALUES LESS THAN (897515520, 3500000)

    TABLESPACE tab_3

)

 

insert into test_part values(897515520,1200000)

insert into test_part values(897515520,1600000)

commit

 

select count(*) from test_part partition(usage_1)

 

select count(*) from test_part partition(usage_2) 

 

I expect both the partitions usage1 and usage2 to have 1 row each but
both the rows are going to usage1, What can be the possible issue?

 

Thanks

--Harvinder

RE: Spam:range partition issue

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