Hi,
Apache Calcite has a powerful but complicated and non-documented function
library. Some projects may require overriding some of the existing
operators to introduce custom type deduction, custom validation, etc. This
includes the base arithmetic functions (e.g, disallow INT + VARCHAR),
aggregat
Remember the rule of Chesterton’s fence: before you change something you must
know why it exists the way it is. Since you don’t cover it in your email, let’s
review the purpose of SqlStdOperatorTable.
As the ’Std’ indicates, it is intended to contain the operators that are
defined by the SQL st
Hi Julian,
The motivation for the proposal is a requirement to change the way how some
operators, like PLUS or SUM, does the type inference and validation. I
understand you concern about the complexity. How would you suggest to
override the behavior of PLUS/SUM in the downstream project, provided
> "As the ’Std’ indicates, it is intended to contain the operators that are
defined by the SQL standard. And which presumably would be enabled in any
configuration."
Makes sense from the operator availability perspective. However, the SQL
standard mostly silent on how types should be inferred and
+1, Thanks Vladimir for pointing the pains out and the solutions looks more
clean and extensible.
Vladimir Ozerov 于2022年7月9日周六 15:01写道：
> Hi,
>
> Apache Calcite has a powerful but complicated and non-documented function
> library. Some projects may require overriding some of the existing
> opera
