[CALCITE-4946] Add method RelBuilder.size()

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.29.0
• Assignee: Julian Hyde
• Reporter: Julian Hyde
• Created: 17/Dec/21 08:49
• Updated: 04/Jan/22 08:27
• Resolved: 04/Jan/22 08:27

Description

Add method RelBuilder.size(), one application of which is to know whether it is safe to call peek().

Also continue the work started in CALCITE-4719, improving support for ARRAY query constructor, e.g.

SELECT ARRAY (SELECT ...) AS items
FROM Orders

Issue Links

• is related to: CALCITE-4719 Add variants of RexSubQuery that collect sub-queries into MULTISET, ARRAY and MAP collections