object PushDownUtils extends PredicateHelper
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canEvaluate(expr: Expression, plan: LogicalPlan): Boolean
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canEvaluateWithinJoin(expr: Expression): Boolean
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def
findExpressionAndTrackLineageDown(exp: Expression, plan: LogicalPlan): Option[(Expression, LogicalPlan)]
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def
pruneColumns(scanBuilder: ScanBuilder, relation: DataSourceV2Relation, projects: Seq[NamedExpression], filters: Seq[Expression]): (Scan, Seq[AttributeReference])
Applies column pruning to the data source, w.r.t.
Applies column pruning to the data source, w.r.t. the references of the given expressions.
- returns
the
Scaninstance (since column pruning is the last step of operator pushdown), and new output attributes after column pruning.
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def
pushFilters(scanBuilder: ScanBuilder, filters: Seq[Expression]): (Seq[Filter], Seq[Expression])
Pushes down filters to the data source reader
Pushes down filters to the data source reader
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pushed filter and post-scan filters.
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def
replaceAlias(condition: Expression, aliases: AttributeMap[Expression]): Expression
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def
splitConjunctivePredicates(condition: Expression): Seq[Expression]
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splitDisjunctivePredicates(condition: Expression): Seq[Expression]
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