[CALCITE-544] Implement Union in Interpreter

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.0.0-incubating
• Labels: newbie
• Assignee: Julian Hyde
• Reporter: Julian Hyde
• Created: 19/Dec/14 18:12
• Updated: 08/Feb/15 08:56
• Resolved: 22/Jan/15 00:43

Description

Interpreter can handle scan, filter, project, values and (with CALCITE-543) aggregate. This task would add union.

You probably need to add a method public void visit(Union union) to CoreCompiler. Add tests to InterpreterTest for union and union all.

This is a good task for a beginner (as evidenced by the "newbie" label).