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project in datafusion::logical_expr::logical_plan::builder - Rust
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Function datafusion::logical_expr::logical_plan::builder::project

source · 
pub fn project(
    plan: LogicalPlan,
    expr: impl IntoIterator<Item = impl Into<Expr>>,
) -> Result<LogicalPlan, DataFusionError>
Expand description

Create Projection

§Errors

This function errors under any of the following conditions:

  • Two or more expressions have the same name
  • An invalid expression is used (e.g. a sort expression)