Merge pull request #42432 from ClickHouse/backport/22.3/42342

Backport #42342 to 22.3: Choose correct aggregation method for lc128 and lc256

src/Interpreters/Aggregator.cpp

@@ -481,6 +481,11 @@ AggregatedDataVariants::Type Aggregator::chooseAggregationMethod()
                 return AggregatedDataVariants::Type::low_cardinality_key32;
             if (size_of_field == 8)
                 return AggregatedDataVariants::Type::low_cardinality_key64;
+            if (size_of_field == 16)
+                return AggregatedDataVariants::Type::low_cardinality_keys128;
+            if (size_of_field == 32)
+                return AggregatedDataVariants::Type::low_cardinality_keys256;
+            throw Exception("Logical error: low cardinality numeric column has sizeOfField not in 1, 2, 4, 8, 16, 32.", ErrorCodes::LOGICAL_ERROR);
         }
 
         if (size_of_field == 1)

tests/queries/0_stateless/02459_low_cardinality_uint128_aggregator.reference

@@ -0,0 +1,20 @@
+0	4950
+1	14950
+2	24950
+3	34950
+4	44950
+5	54950
+6	64950
+7	74950
+8	84950
+9	94950
+0	4950
+1	14950
+2	24950
+3	34950
+4	44950
+5	54950
+6	64950
+7	74950
+8	84950
+9	94950

tests/queries/0_stateless/02459_low_cardinality_uint128_aggregator.sql

@@ -0,0 +1,9 @@
+SET allow_suspicious_low_cardinality_types = 1;
+-- LC UInt128
+CREATE TABLE group_by_pk_lc_uint128 (`k` LowCardinality(UInt128), `v` UInt32) ENGINE = MergeTree ORDER BY k PARTITION BY v%50;
+INSERT INTO group_by_pk_lc_uint128 SELECT number / 100, number FROM numbers(1000);
+SELECT k, sum(v) AS s FROM group_by_pk_lc_uint128 GROUP BY k ORDER BY k ASC LIMIT 1024 SETTINGS optimize_aggregation_in_order = 1;
+-- LC UInt256
+CREATE TABLE group_by_pk_lc_uint256 (`k` LowCardinality(UInt256), `v` UInt32) ENGINE = MergeTree ORDER BY k PARTITION BY v%50;
+INSERT INTO group_by_pk_lc_uint256 SELECT number / 100, number FROM numbers(1000);
+SELECT k, sum(v) AS s FROM group_by_pk_lc_uint256 GROUP BY k ORDER BY k ASC LIMIT 1024 SETTINGS optimize_aggregation_in_order = 1;