Function unnest

datafusion/expr/src/expr_fn.rs:390–394

Create a Unnest expression

(expr: Expr)

/// Create a Unnest expression
pub fn unnest(expr: Expr) -> Expr {
    Expr::Unnest(Unnest {
        expr: Box::new(expr),
    })
}

/// Convenience method to create a new user defined scalar function (UDF) with a
/// specific signature and specific return type.