Struct mz_expr::interpret::SpecialBinary

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struct SpecialBinary {
    map_fn: for<'a> fn(_: ResultSpec<'a>, _: ResultSpec<'a>) -> ResultSpec<'a>,
    pushdownable: (bool, bool),
}
Expand description

A binary function we’ve added special-case handling for; including:

  • A two-argument function, taking and returning ResultSpecs. This overrides the default function-handling logic entirely.
  • Metadata on whether / not this function is pushdownable. See Trace.

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§map_fn: for<'a> fn(_: ResultSpec<'a>, _: ResultSpec<'a>) -> ResultSpec<'a>§pushdownable: (bool, bool)

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impl SpecialBinary

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fn for_func(func: &BinaryFunc) -> Option<SpecialBinary>

Returns the special-case handling for a particular function, if it exists.

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