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Posted to dev@kylin.apache.org by "Zhong Yanghong (Jira)" <ji...@apache.org> on 2019/12/06 09:04:00 UTC
[jira] [Created] (KYLIN-4281) Precisely set the data type of tuple
expression
Zhong Yanghong created KYLIN-4281:
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Summary: Precisely set the data type of tuple expression
Key: KYLIN-4281
URL: https://issues.apache.org/jira/browse/KYLIN-4281
Project: Kylin
Issue Type: Improvement
Reporter: Zhong Yanghong
Assignee: Zhong Yanghong
Previously to simplify the calculating of sum(case when), all of the binary calculation is based on BigDecimal, which is not good for all, especially when dealing with count(distinct case when), whose inner data type may be hll or bitmap.
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