hongbin ma created KYLIN-2575:
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Summary: Experimental feature: Computed Column
Key: KYLIN-2575
URL: https://issues.apache.org/jira/browse/KYLIN-2575
Project: Kylin
Issue Type: New Feature
Reporter: hongbin ma
Assignee: hongbin ma
Computed column is a virtual column that is calculated from an expression of
existing columns. For example, TAX is computed from PRICE * TAX_RATE; TX_YEAR
is from EXTRACT(year from TX_DATE).
Currently user have to create a view to enrich these computed columns, then
feed the view to cube. This has two inconvenience:
Create a view is not easy.
The query has to be rewritten to use view instead of the original table.
Let Kylin/KAP directly support computed column will be a big step forward.
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