Partition on the clarification of required list

Hello gurus

I need clarification on the partition table
TABLE
PART)
Primary key NUMBER PARTNO,
NUMBER OF LB/PO2
MEDIAN NUMBER)

MEDIAN will have 10 distinct values from 0 to 9

so I created 10 partition list on PART Table for 1 part01 part02 for 2... so now

Select partno
a part

Watch the plan INDEX (PRIMARY KEY is used with scan limited quick index)


Select partno
partition part01 - selection '1' median part

don't watch no clue is scanned... It is in full table scan


Please suggest
My partno primary key must be local indexed?
MEDIAN should be indexed at the local level?


Help, please

S

Select partno

a part

Here you select the entire table, then there should be a FULL table scan.

Select partno

partition part01 - selection '1' median part

Here the partition must be ENTIRELY digitized as all lines are being accessed.

My partno primary key must be local indexed?

I think he must have the overall index, assuming that the primary key should be used without using the partitioning key column in the WHERE clause.

MEDIAN should be indexed at the local level?

Yes.

Here are the generic guidelines for the creation of global/local index:

When you decide what type of partitioned index to use, you should consider the following recommendations in order:

  1. If the table partitioning column is a subset of index keys, use a local index. If this is the case, you are finished. If this is not the case, continue to guideline 2.
  2. If the index is unique and does not include the partitioning key columns, use a global index. If this is the case, then you are finished. Otherwise, continue to guideline 3.
  3. If your priority is the ease of management, use a local index. If this is the case, you are finished. If this is not the case, continue to guideline 4.
  4. If the application is an OLTP we and users need fast response time, use a global index. If the application is an a MAS and users more interested in flow, use a local index.

Concepts of partitioning

Tags: Database

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