Function unnest

datafusion/expr/src/logical_plan/builder.rs:2235–2237

Create a [`LogicalPlan::Unnest`] plan

(input: LogicalPlan, columns: Vec<Column>)

/// Create a [`LogicalPlan::Unnest`] plan
pub fn unnest(input: LogicalPlan, columns: Vec<Column>) -> Result<LogicalPlan> {
    unnest_with_options(input, columns, UnnestOptions::default())
}

pub fn get_struct_unnested_columns(
    col_name: &String,