Minor: Fix grouping set typo (#12216)
* Fix grouping set typo
* More
diff --git a/datafusion/physical-optimizer/src/limited_distinct_aggregation.rs b/datafusion/physical-optimizer/src/limited_distinct_aggregation.rs
index e18e530..8653ad1 100644
--- a/datafusion/physical-optimizer/src/limited_distinct_aggregation.rs
+++ b/datafusion/physical-optimizer/src/limited_distinct_aggregation.rs
@@ -33,8 +33,8 @@
/// An optimizer rule that passes a `limit` hint into grouped aggregations which don't require all
/// rows in the group to be processed for correctness. Example queries fitting this description are:
-/// `SELECT distinct l_orderkey FROM lineitem LIMIT 10;`
-/// `SELECT l_orderkey FROM lineitem GROUP BY l_orderkey LIMIT 10;`
+/// - `SELECT distinct l_orderkey FROM lineitem LIMIT 10;`
+/// - `SELECT l_orderkey FROM lineitem GROUP BY l_orderkey LIMIT 10;`
pub struct LimitedDistinctAggregation {}
impl LimitedDistinctAggregation {
diff --git a/datafusion/physical-plan/src/aggregates/mod.rs b/datafusion/physical-plan/src/aggregates/mod.rs
index b5447a2..0f33a9d 100644
--- a/datafusion/physical-plan/src/aggregates/mod.rs
+++ b/datafusion/physical-plan/src/aggregates/mod.rs
@@ -111,9 +111,9 @@
/// Represents `GROUP BY` clause in the plan (including the more general GROUPING SET)
/// In the case of a simple `GROUP BY a, b` clause, this will contain the expression [a, b]
/// and a single group [false, false].
-/// In the case of `GROUP BY GROUPING SET/CUBE/ROLLUP` the planner will expand the expression
+/// In the case of `GROUP BY GROUPING SETS/CUBE/ROLLUP` the planner will expand the expression
/// into multiple groups, using null expressions to align each group.
-/// For example, with a group by clause `GROUP BY GROUPING SET ((a,b),(a),(b))` the planner should
+/// For example, with a group by clause `GROUP BY GROUPING SETS ((a,b),(a),(b))` the planner should
/// create a `PhysicalGroupBy` like
/// ```text
/// PhysicalGroupBy {
@@ -134,7 +134,7 @@
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
+ /// expression in null_expr. If `groups[i][j]` is true, then the
/// j-th expression in the i-th group is NULL, otherwise it is `expr[j]`.
groups: Vec<Vec<bool>>,
}
