[CALCITE-2647] In RelBuilder, add a groupKey method that assumes only one grouping set

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.18.0
• Assignee: Julian Hyde
• Reporter: Julian Hyde
• Created: 29/Oct/18 23:48
• Updated: 23/Dec/18 00:12
• Resolved: 01/Nov/18 18:45

Description

In RelBuilder, add a groupKey method that assumes only one grouping set. Since this is the most common case (GROUP BY in SQL, without GROUPING SETS or ROLLUP or CUBE) it will make many uses of the RelBuilder API more concise.