text: -- @testpoint: opengauss关键字character(非保留)，作为同义词对象名，部分测试点合理报错
  --前置条件
  drop table if exists character_test;
  create table character_test(id int,name varchar(10));
  
  --关键字不带引号-成功
  drop synonym if exists character;
  create synonym character for character_test;
  insert into character values (1,'ada'),(2, 'bob');
  update character set character.name='cici' where character.id=2;
  select * from character;
  
  --清理环境
  drop synonym if exists character;
  
  --关键字带双引号-成功
  drop synonym if exists "character";
  create synonym "character" for character_test;
  insert into "character" values (1,'ada'),(2, 'bob');
  update "character" set "character".name='cici' where "character".id=2;
  select * from "character";
  
  --清理环境
  drop synonym if exists "character";
  
  --关键字带单引号-合理报错
  drop synonym if exists 'character';
  
  --关键字带反引号-合理报错
  drop synonym if exists `character`;
  drop table if exists character_test;