fix: add Decimal64 support for HLL cardinality calculation (#18276)

* fix: handle decimal 64 in `scalar_update_hll_cardinality`

* add logic test

Author: dantengsky

src/query/storages/fuse/src/io/write/stream/column_statistics.rs

@@ -237,6 +237,7 @@ fn scalar_update_hll_cardinality(scalar: &ScalarRef, ty: &DataType, hll: &mut Co
         }
         DataType::Decimal(_) => {
             match scalar {
+                ScalarRef::Decimal(DecimalScalar::Decimal64(v, _)) => hll.add_object(&v),
                 ScalarRef::Decimal(DecimalScalar::Decimal128(v, _)) => hll.add_object(&v),
                 ScalarRef::Decimal(DecimalScalar::Decimal256(v, _)) => hll.add_object(&v),
                 _ => unreachable!(),

tests/sqllogictests/suites/base/issues/issue_18275.test

@@ -0,0 +1,32 @@
+statement ok
+create or replace database test_insert_unreachable_code;
+
+statement ok
+use test_insert_unreachable_code;
+
+
+statement ok
+CREATE OR REPLACE TABLE product_test (
+    id INT,
+    name VARCHAR(50),
+    category VARCHAR(30),
+    price DECIMAL(8,2),
+    stock INT
+);
+
+statement ok
+set enable_block_stream_write = 1;
+
+statement ok
+INSERT INTO product_test (id, name, category, price, stock)
+   VALUES(6, 'Keyboard', 'Electronics', 79.99, 25),
+         (7, 'Table', 'Furniture', 399.99, 3);
+
+
+query TTTT
+select * from product_test order by id;
+----
+6 Keyboard Electronics 79.99 25
+7 Table Furniture 399.99 3
+
+