[bug](function) fix array_map coredump when no rows

be/src/vec/exprs/lambda_function/varray_map_function.cpp

@@ -199,7 +199,7 @@ class ArrayMapFunction : public LambdaFunction {
         Block lambda_block;
         auto column_size = names.size();
         MutableColumns columns(column_size);
-        while (args_info.current_row_idx < block->rows()) {
+        do {
             bool mem_reuse = lambda_block.mem_reuse();
             for (int i = 0; i < column_size; i++) {
                 if (mem_reuse) {
@@ -222,7 +222,7 @@ class ArrayMapFunction : public LambdaFunction {
                 long current_step = std::min(
                         max_step, (long)(args_info.cur_size - args_info.current_offset_in_array));
                 size_t pos = args_info.array_start + args_info.current_offset_in_array;
-                for (int i = 0; i < arguments.size(); ++i) {
+                for (int i = 0; i < arguments.size() && current_step > 0; ++i) {
                     columns[gap + i]->insert_range_from(*lambda_datas[i], pos, current_step);
                 }
                 args_info.current_offset_in_array += current_step;
@@ -265,7 +265,7 @@ class ArrayMapFunction : public LambdaFunction {
             }
             result_col->insert_range_from(*res_col, 0, res_col->size());
             lambda_block.clear_column_data(column_size);
-        }
+        } while (args_info.current_row_idx < block->rows());
 
         //4. get the result column after execution, reassemble it into a new array column, and return.
         ColumnWithTypeAndName result_arr;

regression-test/data/query_p0/sql_functions/array_functions/test_array_map_function.out

@@ -116,3 +116,10 @@
 1	[1, 2, 3, 4, 5]	[10, 20, -40, 80, -100]
 2	[6, 7, 8]	[10, 12, 13]
 
+-- !select_25 --
+1	[[10, 20], [30, 40]]
+2	[[50, 60], [70, 80]]
+3	[]
+4	[[90, 100], [110, 120]]
+5	[[130]]
+

regression-test/suites/query_p0/sql_functions/array_functions/test_array_map_function.groovy

@@ -103,4 +103,29 @@ suite("test_array_map_function") {
         }             
 
         sql "DROP TABLE IF EXISTS ${tableName}"
+
+        sql """ CREATE TABLE IF NOT EXISTS array_map_test (
+            id INT,
+            int_array ARRAY<INT>,
+            string_array ARRAY<STRING>,
+            double_array ARRAY<DOUBLE>,
+            nested_array ARRAY<ARRAY<INT>>,
+            nullable_array ARRAY<INT> NULL
+        ) ENGINE=OLAP
+        DUPLICATE KEY(id)
+        DISTRIBUTED BY HASH(id) BUCKETS 10
+        PROPERTIES (
+            "replication_num" = "1"
+        );
+        """
+        sql """ INSERT INTO array_map_test VALUES
+            (1, [1,2,3], ['a','b','c'], [1.1,2.2,3.3], [[1,2],[3,4]], NULL),
+            (2, [10,20], ['x','y'], [10.5,20.5], [[5,6],[7,8]], [1,2,3]),
+            (3, [], [], [], [], []),
+            (4, [100,200,300], ['one','two','three'], [100.1,200.2,300.3], [[9,10],[11,12]], [4,5,6]),
+            (5, [5], ['single'], [5.5], [[13]], [7]);
+        """
+        qt_select_25 """ 
+            SELECT id, array_map(x -> array_map(y -> y * 10, x), nested_array) FROM array_map_test order by id;
+        """ 
 }