feat(query): add group-by type shrinking rule

src/query/sql/src/planner/optimizer/ir/stats/column_stat.rs

@@ -37,6 +37,9 @@ pub struct ColumnStat {
     /// Count of null values
     pub null_count: u64,
 
+    pub origin_min: Datum,
+    pub origin_max: Datum,
+
     /// Histogram of column
     pub histogram: Option<Histogram>,
 }

src/query/sql/src/planner/optimizer/optimizers/rule/agg_rules/mod.rs

@@ -19,6 +19,7 @@ mod rule_grouping_sets_to_union;
 mod rule_hierarchical_grouping_sets;
 mod rule_push_down_filter_aggregate;
 mod rule_push_down_limit_aggregate;
+mod rule_shrink_type;
 mod rule_split_aggregate;
 mod rule_try_apply_agg_index;
 
@@ -28,5 +29,6 @@ pub use rule_grouping_sets_to_union::RuleGroupingSetsToUnion;
 pub use rule_hierarchical_grouping_sets::RuleHierarchicalGroupingSetsToUnion;
 pub use rule_push_down_filter_aggregate::RulePushDownFilterAggregate;
 pub use rule_push_down_limit_aggregate::RulePushDownRankLimitAggregate;
+pub use rule_shrink_type::RuleShrinkType;
 pub use rule_split_aggregate::RuleSplitAggregate;
 pub use rule_try_apply_agg_index::RuleTryApplyAggIndex;