diff -U3 /store/Workspace/c/pg4ml/plpgsql_pg4ml/expected/unit_test.out /store/Workspace/c/pg4ml/plpgsql_pg4ml/results/unit_test.out
--- /store/Workspace/c/pg4ml/plpgsql_pg4ml/expected/unit_test.out	2024-03-04 10:11:02.734000000 +0800
+++ /store/Workspace/c/pg4ml/plpgsql_pg4ml/results/unit_test.out	2024-03-04 10:21:23.641000000 +0800
@@ -22872,7 +22872,7 @@
 select fv_mx_ele_2d_2_3d(fv_new_randn(0.0, 1.1,array[5*ceil((random()*6))::int,(random()*9)::int]),5,2) is not null;
  ?column? 
 ----------
- t
+ f
 (1 row)
 
 -- fv_mx_ele_3d_2_2d