text: -- @testpoint: 结合索引的使用测试
  
  drop table if exists atan_test_01;
  create table atan_test_01(f1 int,f2 bigint,f3 integer,f4 binary_integer,f5 bigint,
                            f6 real,f7 float,f8 binary_double,f9 decimal,f10 number,f11 numeric);
  insert into atan_test_01(f1,f2,f3,f4,f5,f6,f7,f8,f9,f10,f11) values(11,22,33,44,55,11.1,22.2,33.3,44.4,55.5,66.6);
  insert into atan_test_01(f1,f2,f3,f4,f5,f6,f7,f8,f9,f10,f11) values(66,77,88,99,00,'11.1','22.2','33.3','44.4','55.5','66.6');
  drop index if exists atan_index;
  create index atan_index on atan_test_01(f1);
  select cast(atan(f1) as number(5,2)) from atan_test_01;
  drop table if exists atan_test_01;