ADO.NET Provider for Parquet

Build 20.0.7654

Flatten Objects

Set FlattenObjects to true to flatten object properties into columns of their own. Otherwise, objects nested in arrays are returned as strings of JSON.

Data Type

bool

Default Value

true

Remarks

Set FlattenObjects to true to flatten object properties into columns of their own. Otherwise, objects nested in arrays are returned as strings of JSON. To generate the column name, the provider concatenates the property name onto the object name with a dot.

For example, you can flatten the nested objects below at connection time:

[
     { "grade": "A", "score": 2 },
     { "grade": "A", "score": 6 },
     { "grade": "A", "score": 10 },
     { "grade": "A", "score": 9 },
     { "grade": "B", "score": 14 }
]
When FlattenObjects is set to true and FlattenArrays is set to 1, the preceding array is flattened into the following table:

Column NameColumn Value
grades.0.gradeA
grades.0.score2

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Build 20.0.7654