Struct mz_transform::canonicalize_mfp::CanonicalizeMfp

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pub struct CanonicalizeMfp;
Expand description

Canonicalizes MFPs and performs common sub-expression elimination.

Implementations§

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impl CanonicalizeMfp

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pub fn action( &self, relation: &mut MirRelationExpr, ) -> Result<(), TransformError>

Extract and optimize MFPs.

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pub fn rebuild_mfp(mfp: MapFilterProject, relation: &mut MirRelationExpr)

Canonicalize the MapFilterProject to Map-Filter-Project, in that order.

Trait Implementations§

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impl Debug for CanonicalizeMfp

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Transform for CanonicalizeMfp

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fn transform( &self, relation: &mut MirRelationExpr, _: &mut TransformCtx<'_>, ) -> Result<(), TransformError>

Transform a relation into a functionally equivalent relation.
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fn debug(&self) -> String

A string describing the transform. Read more

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where Self: LowerExp,

Causes self to use its LowerExp implementation when Debug-formatted.
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Causes self to use its UpperExp implementation when Debug-formatted.
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