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https://issues.apache.org/jira/browse/CALCITE-6255?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17818085#comment-17818085
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Barry Kelly commented on CALCITE-6255:
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Created https://github.com/apache/calcite/pull/3694
> Support BigQuery-style JSON_OBJECT invocation syntax
> ----------------------------------------------------
>
> Key: CALCITE-6255
> URL: https://issues.apache.org/jira/browse/CALCITE-6255
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Affects Versions: 1.36.0
> Reporter: Barry Kelly
> Priority: Minor
> Labels: parser
>
> 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')}}
> 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.
>
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