barrkel opened a new pull request, #3694:
URL: https://github.com/apache/calcite/pull/3694
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](https://cloud.google.com/bigquery/docs/reference/standard-sql/json_functions#json_object)
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')
```
This PR updates the grammar to allow `,` as well as `:` for separating
key/value pairs in the invocation.
It does not prevent mixing `,` and `:`, but retains the prohibition from
mixing with `KEY`/`VALUE` syntax.
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