text: -- @testpoint: opengauss关键字end-exec(非保留)，作为函数名，部分测试点合理报错
  
  --关键字不带引号-成功
  drop function if exists end-exec;
  create function end-exec(i integer)
  returns integer
  as $$
  begin
      return i+1;
  end;
  $$ language plpgsql;
  /
  --关键字带双引号-成功
  drop function if exists "end-exec";
  create function "end-exec"(i integer)
  returns integer
  as $$
  begin
      return i+1;
  end;
  $$ language plpgsql;
  /
  drop function if exists "end-exec";
  --关键字带单引号-合理报错
  drop function if exists 'end-exec';
  create function 'end-exec'(i integer)
  returns integer
  as $$
  begin
      return i+1;
  end;
  $$ language plpgsql;
  /
  --关键字带反引号-合理报错
  drop function if exists `end-exec`;
  create function `end-exec`(i integer)
  returns integer
  as $$
  begin
      return i+1;
  end;
  $$ language plpgsql;
  /