Haisheng Yuan created CALCITE-3159: -------------------------------------- Summary: Distinct can be removed for MIN/MAX/BIT_OR/BIT_AND aggregate functions Key: CALCITE-3159 URL: https://issues.apache.org/jira/browse/CALCITE-3159 Project: Calcite Issue Type: Improvement Components: core Reporter: Haisheng Yuan
For the following query: {code:java} select a, min(distinct b), bit_or(distinct c) from foo; {code} Currently Calcite still preserve the distinct for these aggregate functions, but DISTINCT is not meaningful with MIN/MAX and is available for ISO compatibility only. We can safely remove distinct and get more optimization opportunities. -- This message was sent by Atlassian JIRA (v7.6.3#76005)