UDF used with aggregate arguments results in error 30000
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Key: DERBY-3631
URL: https://issues.apache.org/jira/browse/DERBY-3631
Project: Derby
Issue Type: Bug
Components: SQL
Affects Versions: 10.3.2.1
Environment: Linux, Derby-10.3.2.1
Reporter: Donald Munro
UDF used with aggregate arguments results in error 30000: The SELECT list of a
grouped query contains at least one invalid expression.
CREATE FUNCTION MAXOF2(ONE DOUBLE, TWO DOUBLE) RETURNS DOUBLE
PARAMETER STYLE JAVA NO SQL LANGUAGE JAVA
EXTERNAL NAME 'java.lang.Math.max'
CREATE TABLE Test( GroupCol INT, Value1 INT, Value2 INT )
INSERT INTO Test VALUES (1, 1, 5)
INSERT INTO Test VALUES (2, -7, 2)
INSERT INTO Test VALUES (2, 1, -5)
Using a built in function works:
SELECT GroupCol, MOD(SUM(Value1), SUM(Value2)) AS ModOf2 FROM Test GROUP BY
GroupCol
But using the UDF does not:
SELECT GroupCol, MAXOF2(SUM(Value1), SUM(Value2)) AS MaxOf2 FROM Test GROUP BY
GroupCol
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