So maybe the bug is in the fact that UPPER uses the constructor for SqlFunction
(well, almost a constructor) which doesn't supply an operand type inference
argument.
Still, if the operand type checker requires a CHARACTER family, why is a NULL
literal always accepted?
Mihai
Dear Calcite devs,
First of all I really appreciate having a mature framework like Calcite.
Please continue your great work on this project!
My use case is feeding Calcite (v1.35.0) with an SQL query and doing
some optimizations by providing metadata and selected planner rules. I
initialize
Tanner Clary created CALCITE-6198:
-
Summary: Add TO_TIMESTAMP_LTZ function (enabled in Snowflake
library)
Key: CALCITE-6198
URL: https://issues.apache.org/jira/browse/CALCITE-6198
Project: Calcite
Simple answer is that an aggregate function is one that takes a set of values.
For example, if you apply the SUM function to values [1, 2, 3] it returns 6.
When I execute a GROUP BY statement, the values of a particular column within a
particular group (e.g. the group of rows for which deptno =
OperandTypeChecker just makes sure that arguments of known type are compatible;
another interface, SqlOperandTypeInference, infers the types of arguments of
unknown type.
Hopefully it’s now a little less mysterious.
> On Jan 12, 2024, at 11:12 AM, Mihai Budiu wrote:
>
> inference in Calcite
inference in Calcite is still mysterious to me.
Here it infers the type of the argument of UPPER to be NULL instead of VARCHAR.
That's why the result type of UPPER is also NULL.
The fact that UPPER has an OperandTypeChecker of "OperandTypes.CHARACTER" is
completely ignored:
public static final
Tanner Clary created CALCITE-6197:
-
Summary: TIME_SUB is unparsed incorrectly
Key: CALCITE-6197
URL: https://issues.apache.org/jira/browse/CALCITE-6197
Project: Calcite
Issue Type:
Plz help me to understand is it a bug ?
From standard:
6.18
...cut...
::= { UPPER | LOWER }
6)If is specified, then:
a) The declared type of the result of is the declared type of the
!!.
thus i expect that return type from: SELECT UPPER(null) will be VARCHAR
but calcite show :
