Function mz_sql::plan::plan_utils::maybe_rename_columns

pub fn maybe_rename_columns(
    context: impl Display,
    desc: &mut RelationDesc,
    column_names: &[Ident],
) -> Result<(), PlanError>

Renames the columns in desc with the names in column_names if column_names is non-empty.

Returns an error if the length of column_names is greater than the arity of desc.