[CALCITE-6255] Support BigQuery-style JSON_OBJECT invocation syntax

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.36.0
• Fix Version/s: 1.37.0
• Component/s: core
• Labels: parser pull-request-available
• Assignee: Unassigned
• Reporter: Barry Kelly
• Created: 08/Feb/24 09:36
• Updated: 06/May/24 22:19
• Resolved: 21/Feb/24 17:35

Description

Currently, Calcite has two styles for invoking JSON_OBJECT:

    JSON_OBJECT(KEY 'foo' VALUE 'bar', KEY 'foo2' VALUE 'bar2')

and:

    JSON_OBJECT('foo' : 'bar', 'foo2' : 'bar')

However, BigQuery uses a lighter-weight syntax resembling the MAP<> constructor, with an even numbered argument list where every odd item is a key and the following even item is a value:

    JSON_OBJECT('foo', 'bar', 'foo2', 'bar2')

With the objective of syntax compatibility with BigQuery, the simplest change to the grammar is to allow ',' as well as ':' for separating key/value pairs in the invocation.

 

Issue Links

• links to: GitHub Pull Request #3694