alamb commented on code in PR #3603:
URL: https://github.com/apache/arrow-datafusion/pull/3603#discussion_r979233779
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datafusion/core/src/physical_plan/aggregates/mod.rs:
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@@ -90,8 +90,8 @@ pub struct PhysicalGroupBy {
null_expr: Vec<(Arc<dyn PhysicalExpr>, String)>,
/// Null mask for each group in this grouping set. Each group is
/// composed of either one of the group expressions in expr or a null
- /// expression in null_expr. If groups[i][j] is true, then the the
- /// j-th expression in the i-th group is NULL, otherwise it is expr[j].
+ /// expression in null_expr. If `groups[i][j]` is true, then the the
Review Comment:
this is a driveby cleanup -- `rustdoc` was complaining that `i` and `j` were
not valid links 😆
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