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Posted to dev@phoenix.apache.org by "Chunhui Liu (JIRA)" <ji...@apache.org> on 2015/10/16 02:50:07 UTC
[jira] [Created] (PHOENIX-2327) Row value constructors failed on
the index, when len(table's pks) > 2 and table's 1st pk is index's last pk
Chunhui Liu created PHOENIX-2327:
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Summary: Row value constructors failed on the index, when len(table's pks) > 2 and table's 1st pk is index's last pk
Key: PHOENIX-2327
URL: https://issues.apache.org/jira/browse/PHOENIX-2327
Project: Phoenix
Issue Type: Bug
Affects Versions: 4.5.2
Environment: cdh5.3.6
Reporter: Chunhui Liu
1. Table has more than 2 primary keys;
2. Table's 1st pk as index's last pk; eg. table's pks are (pk1, pk2, pk3), the failed index's pks are (pk2, pk3, pk1); table's pks are (1, 2, 3, 4), failed index's pks are (2, 3, 4, 5, 1);
3. Use row value constructors on index with another condition that use one pks(not the table's 1st pk);
4. You will get "DEGENERATE SCAN OVER TABLE_NAME"
Here is the Test SQL
{code:sql}
DROP TABLE IF EXISTS T;
CREATE TABLE IF NOT EXISTS T (
PK1 VARCHAR not null,
PK2 VARCHAR not null,
PK3 VARCHAR not null,
V1 VARCHAR,
CONSTRAINT PK PRIMARY KEY (PK1, PK2, PK3)
);
CREATE INDEX IDX_T ON T
(
PK2, PK3, PK1
);
UPSERT INTO T VALUES('100', '200', '300', 'V');
UPSERT INTO T VALUES('101', '201', '301', 'V');
UPSERT INTO T VALUES('102', '202', '302', 'V');
UPSERT INTO T VALUES('103', '203', '303', 'V');
UPSERT INTO T VALUES('104', '204', '304', 'V');
SELECT * FROM T;
EXPLAIN
SELECT PK1, PK2, PK3 FROM T WHERE
(PK2, PK3, PK1) >= ('202', '302', '102')
AND PK2 < '204'
LIMIT 10;
{code}
I've tried 3 primary key, here is the results.
1. table's pks are (pk1, pk2, pk3);
2. 132 means (pk1, pk3, pk2);
| index's pks order | result |
| 132 | correct |
| 213 | correct |
| 231 | fail |
| 312 | correct |
| 321 | correct |
I've also test this on table with 4, 5 pks
| len(pks) | failed order |
| 3 | 231 |
| 4 | 2341 |
| 5 | 23451 |
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