Fabian Hueske created FLINK-10263:
-------------------------------------
Summary: User-defined function with LITERAL paramters yields
CompileException
Key: FLINK-10263
URL: https://issues.apache.org/jira/browse/FLINK-10263
Project: Flink
Issue Type: Bug
Components: Table API & SQL
Affects Versions: 1.7.0
Reporter: Fabian Hueske
Assignee: Timo Walther
When using a user-defined scalar function only with literal parameters, a
{{CompileException}} is thrown. For example
{code}
SELECT myFunc(CAST(40.750444 AS FLOAT), CAST(-73.993475 AS FLOAT))
public class MyFunc extends ScalarFunction {
public int eval(float lon, float lat) {
// do something
}
}
{code}
results in
{code}
[ERROR] Could not execute SQL statement. Reason:
org.codehaus.commons.compiler.CompileException: Line 5, Column 10: Cannot
determine simple type name "com"
{code}
The problem is probably caused by the expression reducer because it disappears
if a regular attribute is added to a parameter expression.
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