Struct PruningExpressionBuilder 

struct PruningExpressionBuilder<'a> {
    column: Column,
    column_expr: Arc<dyn PhysicalExpr>,
    op: Operator,
    scalar_expr: Arc<dyn PhysicalExpr>,
    field: &'a Field,
    required_columns: &'a mut RequiredColumns,
}

Fields

column: Column

column_expr: Arc<dyn PhysicalExpr>

op: Operator

scalar_expr: Arc<dyn PhysicalExpr>

field: &'a Field

required_columns: &'a mut RequiredColumns

Implementations

impl<'a> PruningExpressionBuilder<'a>

fn try_new( left: &'a Arc<dyn PhysicalExpr>, right: &'a Arc<dyn PhysicalExpr>, op: Operator, schema: &'a SchemaRef, required_columns: &'a mut RequiredColumns, ) -> Result<Self>

fn op(&self) -> Operator

fn scalar_expr(&self) -> &Arc<dyn PhysicalExpr>

fn min_column_expr(&mut self) -> Result<Arc<dyn PhysicalExpr>>

fn max_column_expr(&mut self) -> Result<Arc<dyn PhysicalExpr>>

fn null_count_column_expr(&mut self) -> Result<Arc<dyn PhysicalExpr>>

This function is to simply retune the null_count physical expression no matter what the predicate expression is

i.e., x > 5 => x_null_count, cast(x as int) < 10 => x_null_count, try_cast(x as float) < 10.0 => x_null_count

fn row_count_column_expr(&mut self) -> Result<Arc<dyn PhysicalExpr>>

This function is to simply retune the row_count physical expression no matter what the predicate expression is

i.e., x > 5 => x_row_count, cast(x as int) < 10 => x_row_count, try_cast(x as float) < 10.0 => x_row_count