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Posted to issues@impala.apache.org by "Attila Jeges (JIRA)" <ji...@apache.org> on 2018/07/31 09:04:00 UTC

[jira] [Created] (IMPALA-7368) Add initial support for DATE type

Attila Jeges created IMPALA-7368:
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             Summary: Add initial support for DATE type
                 Key: IMPALA-7368
                 URL: https://issues.apache.org/jira/browse/IMPALA-7368
             Project: IMPALA
          Issue Type: Sub-task
            Reporter: Attila Jeges
            Assignee: Attila Jeges


DATE values describe a particular year/month/day, in the form YYYY-MM-DD. For example, DATE '2013-01-01'. Date types do not have a time of day component. The range of values supported for the Date type is 0000-01-01 to 9999-12-31.

The initial DATE type support should incluide the following changes:
- text scanner/writer
- casting between DATE and other types
- expression evaluation
- "IS [NOT] NULL" and "[NOT] IN" predicates
- common comparison operators 
- conditiioal functions
- infrastructure changes for builtin scalar functions.

These items are tightly coupled and it makes sense to implement them in one change-set.




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