text: -- @testpoint: 模式匹配操作符SIMILAR TO,使用元字符+，重复项为多个字符
  DROP TABLE IF EXISTS type_char;
  CREATE TABLE type_char (string1 varchar(100));
  insert into type_char values ('abcabcbababcd');
  SELECT  * from type_char  where string1 SIMILAR TO '(abc)+bababcd';
  DROP TABLE IF EXISTS type_char;