Forward Xu created CALCITE-2864:
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Summary: Add the JSON_DEPTH function
Key: CALCITE-2864
URL: https://issues.apache.org/jira/browse/CALCITE-2864
Project: Calcite
Issue Type: New Feature
Reporter: Forward Xu
Returns the maximum depth of a JSON document. Returns {{NULL}} if the argument
is {{NULL}}. An error occurs if the argument is not a valid JSON document.
An empty array, empty object, or scalar value has depth 1. A nonempty array
containing only elements of depth 1 or nonempty object containing only member
values of depth 1 has depth 2. Otherwise, a JSON document has depth greater
than 2.
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