Relationalize class - Amazon Glue
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Relationalize class

Flattens a nested schema in a DynamicFrame and pivots out array columns from the flattened frame.

Example

We recommend that you use the DynamicFrame.relationalize() method to relationalize a DynamicFrame. To view a code example, see Example: Use relationalize to flatten a nested schema in a DynamicFrame.

Methods

__call__(frame, staging_path=None, name='roottable', options=None, transformation_ctx = "", info = "", stageThreshold = 0, totalThreshold = 0)

Relationalizes a DynamicFrame and produces a list of frames that are generated by unnesting nested columns and pivoting array columns. You can join a pivoted array column to the root table by using the join key that is generated in the unnest phase.

  • frame – The DynamicFrame to relationalize (required).

  • staging_path – The path where the method can store partitions of pivoted tables in CSV format (optional). Pivoted tables are read back from this path.

  • name – The name of the root table (optional).

  • options – A dictionary of optional parameters. Currently unused.

  • transformation_ctx – A unique string that is used to identify state information (optional).

  • info – A string associated with errors in the transformation (optional).

  • stageThreshold – The maximum number of errors that can occur in the transformation before it errors out (optional). The default is zero.

  • totalThreshold – The maximum number of errors that can occur overall before processing errors out (optional). The default is zero.

apply(cls, *args, **kwargs)

Inherited from GlueTransform Apply.

name(cls)

Inherited from GlueTransform Name.

describeArgs(cls)

Inherited from GlueTransform describeArgs.

describeReturn(cls)

Inherited from GlueTransform describeReturn.

describeTransform(cls)

Inherited from GlueTransform describeTransform.

describeErrors(cls)

Inherited from GlueTransform describeErrors.

describe(cls)

Inherited from GlueTransform Describe.