Thanks Danny, Got it. I will watch CALCITE-326.
Regards, Trista Juan Pan panj...@apache.org Juan Pan(Trista), Apache ShardingSphere On 09/29/2019 16:15，Danny Chan<yuzhao....@gmail.com> wrote： No worries, Juan Pan, welcome to contribute to Apache Calcite. Calcite always put the JIRA issues in the first place instead of GitHub page because it is really food for bug/problem tracing. If you have any questions or want to discuss something, welcome to send mail into the DEV mailing list. If it is a known bug or promotion, feel free to fire a JIRA issue and we move the discussion there. The committers would help you and what you need to do is describe your problems/cases clearly in the JIRA issue. Best, Danny Chan 在 2019年9月29日 +0800 PM3:23，Juan Pan <panj...@apache.org>，写道： Actually, i think this problem should be already raised by others, for it is obvious enough. But i visited Calcite gitHub, and can not find issue list, so i sent this email. Yes, Calcite is using Jira for issues, i got. Given Calcite implements the interfaces of ResultSetMetadata, ResultSet and so on, it should return the real columnName or columnLabel from SQL, not the parsing expr(?) which is somewhat... strange to users. When i first got the result `EXPR$0`, i doubted whether my program went wrong? Recently, i am exploring Calcite, and i’d like to do some contributions to Calcite community if i can. But.. for a new one, it seems difficult. Regard, Trista Juan Pan panj...@apache.org Juan Pan(Trista), Apache ShardingSphere On 09/29/2019 14:48，Danny Chan<yuzhao....@gmail.com> wrote： There is already a JIRA issue to trace this problem[1], maybe we can move the discussion to there. [1] https://issues.apache.org/jira/browse/CALCITE-3261 Best, Danny Chan 在 2019年9月29日 +0800 AM11:39，Juan Pan <panj...@apache.org>，写道： Hi everyone, I executed SQL `select count(*) from tb1` through Calcite and resultSet.getMetaData().getColumnName(i) in my project. But the result is `EXPR$0` not `COUNT(*)`. Is there any way to get real columnName? Thanks for your attention. Regard, Trista Juan Pan panj...@apache.org Juan Pan(Trista), Apache ShardingSphere
