json result helpers #114
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json result helpers #114
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Add several new helpers for getting result data as JSON-serializable values.
Both DuckDBResult and DuckDBResultReader now have
getColumnsJson,getColumnsObjectJson,getRowsJson, andgetRowObjectsJson.The conversion to JSON-serializable values is non-lossy. DuckDB data values that cannot be expressed in JSON are usually converted to a string; in a few cases (e.g. INTERVAL, MAP, UNION) they're converted to an object or array.
This is implemented using a general-purpose value conversion mechanism, which is exposed on DuckDBDataChunk. Other conversions can be implemented using this mechanism.