Module datafusion_physical_expr::utils

Structs

• LiteralGuarantee
  Represents a guarantee that must be true for a boolean expression to evaluate to true.

Enums

• Guarantee
  What is guaranteed about the values for a LiteralGuarantee?

Functions

• build_dag
• collect_columns
  Recursively extract referenced Columns within a PhysicalExpr.
• convert_to_expr
  This function returns all Arc<dyn PhysicalExpr>s inside the given PhysicalSortExpr sequence.
• get_indices_of_exprs_strict
  This function finds the indices of targets within items using strict equality.
• map_columns_before_projection
  This function maps back requirement after ProjectionExec to the Executor for its input.
• merge_vectors
  Merge left and right sort expressions, checking for duplicates.
• reassign_predicate_columns
  Re-assign column indices referenced in predicate according to given schema. This may be helpful when dealing with projections.
• reverse_order_bys
  Reverses the ORDER BY expression, which is useful during equivalent window expression construction. For instance, ‘ORDER BY a ASC, NULLS LAST’ turns into ‘ORDER BY a DESC, NULLS FIRST’.
• scatter
  Scatter truthy array by boolean mask. When the mask evaluates true, next values of truthy are taken, when the mask evaluates false values null values are filled.
• split_conjunction
  Assume the predicate is in the form of CNF, split the predicate to a Vec of PhysicalExprs.
• split_disjunction
  Assume the predicate is in the form of DNF, split the predicate to a Vec of PhysicalExprs.

Type Aliases

• ExprTreeNode