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docs: improve error message when trying to infer the dtype of Deferreds #11616

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docs: improve error message when trying to infer the dtype of Deferreds #11616

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NickCrews
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@github-actions github-actions bot added the datatypes Issues relating to ibis's datatypes (under `ibis.expr.datatypes`) label Sep 13, 2025
JonAnCla
JonAnCla reviewed Sep 18, 2025
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ibis/expr/datatypes/value.py


@infer.register(Deferred)
def infer_deferred(value: Deferred) -> NoReturn:
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sorry for my ignorance: is there somewhere I can refer to to get an idea of circumstances that cause inference to be triggered? seems like its not when building a Deferred which makes sense, so presumably its when incorporating a Deferred into an expression bound to a concrete table or column?

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