How to distribute values in oracle?

by raphael_tillman , in category: MySQL , 19 days ago

How to distribute values in oracle?

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1 answer

by cortez.connelly , 18 days ago

@raphael_tillman 

In Oracle, you can distribute values in a table by using the DISTRIBUTE BY clause in a CREATE TABLE or ALTER TABLE statement.


Here's an example:

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CREATE TABLE my_table (
    id NUMBER,
    name VARCHAR2(50)
)
DISTRIBUTE BY HASH(id);


In the above example, the DISTRIBUTE BY HASH(id) clause specifies that the values in the id column should be distributed across the nodes in the Oracle cluster using a hash function.


You can also use other distribution methods such as DISTRIBUTE BY ROUND ROBIN, DISTRIBUTE BY PARTITION, or DISTRIBUTE BY RANGE depending on your specific requirements.


Keep in mind that the distribution method you choose can have an impact on query performance, so it's important to choose the right distribution method based on the nature of your data and how it will be accessed.