[jira] [Created] (DRILL-707) Support value vectors with selection vector in Drill C++ Client

["Xiao Meng (JIRA)" <ji...@apache.org>]

Xiao Meng created DRILL-707:
-------------------------------

             Summary: Support value vectors with selection vector in Drill C++ Client
                 Key: DRILL-707
                 URL: https://issues.apache.org/jira/browse/DRILL-707
             Project: Apache Drill
          Issue Type: New Feature
          Components: Client - C++
            Reporter: Xiao Meng


Drill C++ client needs to support selection vector.
Some queries will return record batch with selection vector as true.

For example, given the following hive table,

{code}
+------------+------------+
| keycolumn  |  column1   |
+------------+------------+
| Zero       | 0          |
| One        | 1          |
| MinusOne   | -1         |
| Two        | 2          |
| MaxTInt    | 127        |
| MinTInt    | -128       |
| MaxUTInt   | 255        |
| MaxTIntP1  | 128        |
| MinTIntM1  | -129       |
| MaxUTIntP1 | 256        |
| MaxSInt    | 32767      |
| MinSInt    | -32768     |
| MaxUSInt   | 65535      |
| MinSIntM1  | -32769     |
| MaxSIntP1  | 32768      |
| MaxUSIntP1 | 65536      |
| MaxInt     | 2147483647 |
| MinInt     | -2147483648 |
| MaxUInt    | 4294967295 |
| MaxIntP1   | 2147483648 |
| MinIntM1   | -2147483649 |
| MaxUIntP1  | 4294967296 |
| MaxBInt    | 9223372036854775807 |
| MinBInt    | -9223372036854775808 |
+------------+------------+
{code}

We issue the following two queries:
Query 1:
{code}
select column1 from hivestg.`bigint_table` where keycolumn='Zero'
{code}

Query 2:
{code}
select column1 from hivestg.`bigint_table` limit 1
{code}

Query 2 will return record batch with is_section_vector_2 as true



--
This message was sent by Atlassian JIRA
(v6.2#6252)