[CALCITE-785] Add "Piglet", a subset of Pig Latin on top of Calcite algebra

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.5.0
• Assignee: Julian Hyde
• Reporter: Julian Hyde
• Created: 05/Jul/15 07:15
• Updated: 10/Nov/15 08:02
• Resolved: 07/Oct/15 19:35

Description

Implement a subset of Pig Latin on top of Calcite, mapping it onto Calcite algebra (via RelBuilder) that can then be optimized and executed on any back-end.

This serves several purposes:

• Illustrate how to implement a data language on Calcite
• Clear technical roadblocks so that the real Pig can be implemented on Calcite
• Strengthen Calcite's support for nested collections and related operations such as cogroup

Issue Links

• is related to: DRILL-82 Pig Latin to logical language parser and converter
• is related to: PIG-4107 Calcite for query optimization
• relates to: CALCITE-869 Add VALUES command to Piglet