[PHOENIX-2319] SELECT failed on secondary index when table's columns are ALL primary key

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 4.5.2
• Fix Version/s: 4.6.0

Environment

cdh5.3.6

• Assignee: James R. Taylor
• Reporter: Chunhui Liu
• Created: 14/Oct/15 06:23
• Updated: 21/Nov/15 02:17
• Resolved: 15/Oct/15 19:24

Description

1. create a table, and use all columns(eg. pk1, pk2) as constraint pk;
2. create a secondary index on the table, use (pk2, pk1) as constraint pk;
3. create some test data;
4. select pk1, pk2 from t where pk2='202';
5. no result;

--Create table, all columns are primary key.
CREATE TABLE IF NOT EXISTS T (
   PK1 VARCHAR not null,
   PK2 VARCHAR not null,
   CONSTRAINT PK PRIMARY KEY (PK1, PK2)
);

--Create secondary index
CREATE INDEX IDX_T ON T
(
   PK2, PK1
);

--Test data
UPSERT INTO T VALUES('100', '200');
UPSERT INTO T VALUES('101', '201');
UPSERT INTO T VALUES('102', '202');
UPSERT INTO T VALUES('103', '203');
UPSERT INTO T VALUES('104', '204');

--make sure data was created correctly.
SELECT * FROM T;

--success
SELECT PK1, PK2 FROM T WHERE PK1='102';

--no result with conditions(pk2[=,>,<,>=,<=]'202')
EXPLAIN
SELECT PK1, PK2 FROM T WHERE PK2 = '202';

--no result
SELECT * FROM IDX_T WHERE ':PK2'='202'

--success
EXPLAIN
SELECT /*+ NO_INDEX*/ PK1, PK2 FROM T WHERE PK2 = '202';

--cleanup
DROP TABLE IF EXISTS T;

Then, I create a table with extra column(KV), SELECT is ok.

CREATE TABLE IF NOT EXISTS T (
   PK1 VARCHAR not null,
   PK2 VARCHAR not null,
   KV  VARCHAR,
   CONSTRAINT PK PRIMARY KEY (PK1, PK2)
);

--Create secondary index
CREATE INDEX IDX_T ON T
(
   PK2, PK1
);