Feat/ffi scalar udf #1033
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Feat/ffi scalar udf #1033
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…an table provider
… single partition, so update the unit test to check all partitions.
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Putting into draft because we need the upstream DataFusion repository to release version 46 before this can be enabled. |
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This could be reviewed now! |
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Superseded by #1145 |
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Which issue does this PR close?
This addresses part of #1017 - the scalar UDFs
Rationale for this change
This change enables users who have written DataFusion scalar UDFs to reuse them in
datafusion-pythonwith minimal overhead. They simply need to create a python object that exposes a PyCapsule that is theFFI_ScalarUDF.What changes are included in this PR?
Adds a function in ScalarUDF to create from a FFI object.
Add a full example and integration test.
Are there any user-facing changes?
Existing interfaces are not changed, but additional
ffi_udffunction is added.