Re: Help with SQL to Relational Algebra Conversion - No match found for aggregate function signature

[Yuzhao Chen]

There is a sum agg func in [1], the reason you can not find the function is 
that you initialize use constructor `new SqlStdOperatorTable` for the validator 
which is not initialized, the right way is use SqlStdOperatorTable#instance() 
[2] or FrameworkConfig#getOperatorTable().
[1] 
https://github.com/apache/calcite/blob/11c067f9992d9c8bc29e2326dd8b299ad1e9dbdc/core/src/main/java/org/apache/calcite/sql/fun/SqlStdOperatorTable.java#L912
[2] 
https://github.com/apache/calcite/blob/11c067f9992d9c8bc29e2326dd8b299ad1e9dbdc/core/src/main/java/org/apache/calcite/sql/fun/SqlStdOperatorTable.java#L2382

Best,
Danny Chan
在 2019年3月27日 +0800 AM10:06，dev@calcite.apache.org，写道：
>
> SqlStdOperatorTable