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From Tulasi Paradarami <tulasi.krishn...@gmail.com>
Subject Re: Null array elements with joins
Date Wed, 20 Jun 2018 14:43:49 GMT
Tested on 4.7, 4.11 & 4.14.
https://issues.apache.org/jira/browse/PHOENIX-4791


On Tue, Jun 19, 2018 at 8:10 PM Jaanai Zhang <cloud.poster@gmail.com> wrote:

> what's your Phoenix's version?
>
>
> ----------------------------------------
>    Yun Zhang
>    Best regards!
>
>
> 2018-06-20 1:02 GMT+08:00 Tulasi Paradarami <tulasi.krishna.p@gmail.com>:
>
>> Hi,
>>
>> I'm running few tests against Phoenix array and running into this bug
>> where array elements return null values when a join is involved. Is this a
>> known issue/limitation of arrays?
>>
>> create table array_test_1 (id integer not null primary key, arr
>> tinyint[5]);
>> upsert into array_test_1 values (1001, array[0, 0, 0, 0, 0]);
>> upsert into array_test_1 values (1002, array[0, 0, 0, 0, 1]);
>> upsert into array_test_1 values (1003, array[0, 0, 0, 1, 1]);
>> upsert into array_test_1 values (1004, array[0, 0, 1, 1, 1]);
>> upsert into array_test_1 values (1005, array[1, 1, 1, 1, 1]);
>>
>> create table test_table_1 (id integer not null primary key, val varchar);
>> upsert into test_table_1 values (1001, 'abc');
>> upsert into test_table_1 values (1002, 'def');
>> upsert into test_table_1 values (1003, 'ghi');
>>
>> 0: jdbc:phoenix:localhost> select t1.id, t2.val, t1.arr[1], t1.arr[2],
>> t1.arr[3] from array_test_1 as t1 join test_table_1 as t2 on t1.id =
>> t2.id;
>>
>> +--------+---------+------------------------+------------------------+------------------------+
>> | T1.ID  | T2.VAL  | ARRAY_ELEM(T1.ARR, 1)  | ARRAY_ELEM(T1.ARR, 2)  |
>> ARRAY_ELEM(T1.ARR, 3)  |
>>
>> +--------+---------+------------------------+------------------------+------------------------+
>> | 1001   | abc     | null                   | null                   |
>> null                   |
>> | 1002   | def     | null                   | null                   |
>> null                   |
>> | 1003   | ghi     | null                   | null                   |
>> null                   |
>>
>> +--------+---------+------------------------+------------------------+------------------------+
>> 3 rows selected (0.056 seconds)
>>
>> However, directly selecting array elements from the array returns data
>> correctly.
>> 0: jdbc:phoenix:localhost> select t1.id, t1.arr[1], t1.arr[2], t1.arr[3]
>> from array_test_1 as t1;
>>
>> +-------+---------------------+---------------------+---------------------+
>> |  ID   | ARRAY_ELEM(ARR, 1)  | ARRAY_ELEM(ARR, 2)  | ARRAY_ELEM(ARR, 3)
>> |
>>
>> +-------+---------------------+---------------------+---------------------+
>> | 1001  | 0                   | 0                   | 0
>>  |
>> | 1002  | 0                   | 0                   | 0
>>  |
>> | 1003  | 0                   | 0                   | 0
>>  |
>> | 1004  | 0                   | 0                   | 1
>>  |
>> | 1005  | 1                   | 1                   | 1
>>  |
>>
>> +-------+---------------------+---------------------+---------------------+
>> 5 rows selected (0.044 seconds)
>>
>>
>>
>

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