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Julian Hyde commented on CALCITE-6306: -------------------------------------- Can you change the subject so it’s clear which calcite component this issue affects? As currently written it sounds like a bug in MySQL. > FILTER clauses for aggregate functions are not supported in MySQL, MariaDB > and Starrocks > ---------------------------------------------------------------------------------------- > > Key: CALCITE-6306 > URL: https://issues.apache.org/jira/browse/CALCITE-6306 > Project: Calcite > Issue Type: Bug > Reporter: hongyu guo > Priority: Minor > Labels: pull-request-available > > {code:sql} > mysql> select sum(x) filter (where x = 1) from t; > ERROR 1064 (42000): You have an error in your SQL syntax; check the manual > that corresponds to your MySQL server version for the right syntax to use > near '(where x = 1) from t' at line 1 {code} > See details in https://modern-sql.com/feature/filter -- This message was sent by Atlassian Jira (v8.20.10#820010)