Josh Mahonin created PHOENIX-1229:
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Summary: Coalesce on nth_value gives ArrayIndexOutOfBoundsException
Key: PHOENIX-1229
URL: https://issues.apache.org/jira/browse/PHOENIX-1229
Project: Phoenix
Issue Type: Bug
Affects Versions: 5.0.0
Reporter: Josh Mahonin
Running a query with "NTH_VALUE" can result in null values returning, which is
expected. When wrapping the results in a coalesce, a
java.lang.ArrayIndexOutOfBoundsException is thrown.
Reproducible test case below:
-- Create table
CREATE TABLE TEST_NTH(
ID BIGINT NOT NULL,
DATE TIMESTAMP NOT NULL,
COUNT BIGINT
CONSTRAINT pk PRIMARY KEY(ID, DATE));
-- Sample values
UPSERT INTO TEST_NTH(ID, DATE, COUNT) VALUES(1, CURRENT_TIME(), 1);
UPSERT INTO TEST_NTH(ID, DATE, COUNT) VALUES(1, CURRENT_TIME(), 2);
UPSERT INTO TEST_NTH(ID, DATE, COUNT) VALUES(2, CURRENT_TIME(), 1);
-- Select nth, returns null for id 2, OK
SELECT ID,
NTH_VALUE(COUNT, 2)
WITHIN GROUP (ORDER BY COUNT DESC)
FROM TEST_NTH
GROUP BY ID;
-- Using coalesce throws java.lang.ArrayIndexOutOfBoundsException
SELECT ID,
COALESCE(
NTH_VALUE(COUNT, 2)
WITHIN GROUP (ORDER BY COUNT DESC),
0)
FROM TEST_NTH
GROUP BY id;
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