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object AstUtil

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  1. final def !=(arg0: Any): Boolean
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  2. final def ##(): Int
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  3. final def ==(arg0: Any): Boolean
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  4. final def asInstanceOf[T0]: T0
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  5. def canExtractNonAstConditionIfNeed(expr: BaseExprMeta[_], left: Seq[ExprId], right: Seq[ExprId]): Boolean

    Check whether it can be split into non-ast sub-expression if needed

    Check whether it can be split into non-ast sub-expression if needed

    returns

    true when: 1) If all ast-able in expr; 2) all non-ast-able tree nodes don't contain attributes from both join sides. In such case, it's not able to push down into single child.

  6. def clone(): AnyRef
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  7. final def eq(arg0: AnyRef): Boolean
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  9. def extractNonAstFromJoinCond(condition: Option[BaseExprMeta[_]], left: AttributeSeq, right: AttributeSeq, skipCheck: Boolean): (Option[Expression], List[NamedExpression], List[NamedExpression])

    Extract non-AST functions from join conditions and update the original join condition.

    Extract non-AST functions from join conditions and update the original join condition. Based on the attributes, it decides which side the split condition belongs to. The replaced condition is wrapped with GpuAlias with new intermediate attributes.

    condition

    to be split if needed

    left

    attributions from left child

    right

    attributions from right child

    skipCheck

    whether skip split-able check

    returns

    a tuple of Expression for remained expressions, List of NamedExpression for left child if any, List of NamedExpression for right child if any

  10. def finalize(): Unit
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