[fix](function) the bucket number arg of width_bucket should be a pos…

…itive integer value (apache#37892)

## Proposed changes

Issue Number: close #xxx

<!--Describe your changes.-->

be/src/vec/functions/function_width_bucket.cpp

@@ -28,6 +28,7 @@
 #include "vec/columns/column.h"
 #include "vec/columns/column_vector.h"
 #include "vec/columns/columns_number.h"
+#include "vec/common/assert_cast.h"
 #include "vec/core/block.h"
 #include "vec/core/column_numbers.h"
 #include "vec/core/column_with_type_and_name.h"
@@ -71,6 +72,12 @@ class FunctionWidthBucket : public IFunction {
  block.get_by_position(arguments[3]).column->convert_to_full_column_if_const();
  int64_t num_buckets = num_buckets_ptr->get_int(0);
 
+ if (num_buckets <= 0) {
+ return Status::InternalError(
+ "The desired number({}) of buckets must be a positive integer value.",
+ num_buckets);
+ }
+
  auto nested_column_ptr = ColumnInt64::create(input_rows_count, 0);
  DataTypePtr expr_type = block.get_by_position(arguments[0]).type;
 
@@ -86,12 +93,10 @@ class FunctionWidthBucket : public IFunction {
  void _execute(const IColumn& expr_column, const IColumn& min_value_column,
  const IColumn& max_value_column, const int64_t num_buckets,
  IColumn& nested_column) const {
- const ColumnType& expr_column_concrete = reinterpret_cast<const ColumnType&>(expr_column);
- const ColumnType& min_value_column_concrete =
- reinterpret_cast<const ColumnType&>(min_value_column);
- const ColumnType& max_value_column_concrete =
- reinterpret_cast<const ColumnType&>(max_value_column);
- ColumnInt64& nested_column_concrete = reinterpret_cast<ColumnInt64&>(nested_column);
+ const auto& expr_column_concrete = assert_cast<const ColumnType&>(expr_column);
+ const auto& min_value_column_concrete = assert_cast<const ColumnType&>(min_value_column);
+ const auto& max_value_column_concrete = assert_cast<const ColumnType&>(max_value_column);
+ auto& nested_column_concrete = assert_cast<ColumnInt64&>(nested_column);
 
  size_t input_rows_count = expr_column.size();
 

regression-test/suites/query_p0/sql_functions/width_bucket_fuctions/test_width_bucket_function.groovy

@@ -89,4 +89,9 @@ suite("test_width_bucket_function", "arrow_flight_sql") {
  qt_select_width_bucket_3 "select width_bucket(10.0,0,11,10);"
  qt_select_width_bucket_4 "select width_bucket(10,0,10.1,10);"
  qt_select_width_bucket_5 "select width_bucket(10,0,10.10,10);"
+
+ test {
+ sql "select width_bucket(4, 0, 8, 0)"
+ exception "buckets must be a positive integer value"
+ }
 }