[DRILL-3019] Extra column in Schema of Recordbatch from scanning Values

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.1.0
• Component/s: Execution - Data Types
• Assignee: Sean Hsuan-Yi Chu
• Reporter: Sean Hsuan-Yi Chu
• Due: 10/May/15
• Created: 11/May/15 03:33
• Updated: 01/Jul/15 01:01
• Resolved: 28/May/15 22:46

Description

A query which has a pattern:
column IN (1, 1 + 1, 1 + 2)

For the tuple, Calcite makes a plan like

UnionAll(all=[true])
  UnionAll(all=[true])
    Project(EXPR$0=[+(1, 1)])
      Values
    Project(EXPR$0=[+(1, 2)])
      Values
  Values

At execution, the schema of the recordbatch from scanning Values is [`ZERO`(BIGINT: OPTIONAL), `*`(BIGINT: OPTIONAL)].

The second column (i.e., `*`) is not supposed to be there.