Re: Oracle to Postgres - Transform Hash Partition - Mailing list pgsql-general

From Christoph Moench-Tegeder
Subject Re: Oracle to Postgres - Transform Hash Partition
Date
Msg-id ZmIC5LqJhqkaEnS-@sciurus.exwg.net
Whole thread Raw
In response to Oracle to Postgres - Transform Hash Partition  (David Barbour <dbarbour@istation.com>)
Responses Re: Oracle to Postgres - Transform Hash Partition
List pgsql-general
## David Barbour (dbarbour@istation.com):

> Now I need to 'attach' the original table.  The problem I'm running into is
> there are no good examples of how to define the values.

The syntax is the same as with CREATE TABLE ... PARTITION OF, e.g.
ALTER TABLE parent ATTACH TABLE part FOR VALUES WITH (MODULUS m, REMAINDER r);

> Here's an example:
>  alter table idev.assessment_result_2023_dab_part
> attach partition idev.assessment_result_2023_dab for values with(modulus 8,
> remainder 1) to (modulus 8, remainder 7)

There's only one (modulus, remainder) tuple in the partition bound
definition for hash partitions, and always only one partition bound
specification per partition.
Maybe what you actually want is a DEFAULT partition (specified as
PARTITION OF parent DEFAULT), or maybe a completely different approach?

Regards,
Christoph

-- 
Spare Space.



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