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get_required_sort_exprs_indices

datafusion_common

Function get_required_sort_exprs_indices 

Source 
pub fn get_required_sort_exprs_indices(
    schema: &DFSchema,
    sort_expr_names: &[String],
) -> Vec<usize>
Expand description

Returns indices for the minimal subset of ORDER BY expressions that are functionally equivalent to the original set of ORDER BY expressions.