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Posted to dev@phoenix.apache.org by "James Taylor (JIRA)" <ji...@apache.org> on 2016/03/24 17:54:25 UTC

[jira] [Created] (PHOENIX-2795) Support auto partition for views

James Taylor created PHOENIX-2795:
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             Summary: Support auto partition for views
                 Key: PHOENIX-2795
                 URL: https://issues.apache.org/jira/browse/PHOENIX-2795
             Project: Phoenix
          Issue Type: Improvement
            Reporter: James Taylor
            Assignee: Thomas D'Silva


When a view or base table is created, we should have an string AUTO_PARTITION_SEQ parameter on CREATE TABLE which uses a sequence based on the argument on the server side to generate a WHERE clause with the first PK column and the unique identifier from the sequence.

For example:
{code}
CREATE SEQUENCE metric_id_seq;
CREATE TABLE metric_table (metric_id INTEGER, val DOUBLE) AUTO_PARTITION_SEQ=metric_id_seq;
CREATE VIEW my_view1 AS SELECT * FROM base_table;
{code}
would tack on a WHERE clause base on the next value in a sequence, logically like this: {{WHERE partition_id = }} + {{NEXT VALUE FROM}} + {{metric_id_seq}}

It's important that the sequence be generated *after* the check for the existence of the view so that we don't burn sequence values needlessly if the view already exists.



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