text: --  @testpoint:重置文本搜索配置属性语法测试
  --创建文本搜索配置
  DROP TEXT SEARCH CONFIGURATION if exists ngram2;
  CREATE TEXT SEARCH CONFIGURATION ngram2 (parser=ngram) WITH (gram_size = 2, grapsymbol_ignore = false);
  --增加映射
  ALTER TEXT SEARCH CONFIGURATION ngram2 ADD MAPPING FOR numeric WITH simple,english_stem;
  --重置文本搜索配置属性，配置选项不带括号，合理报错
  ALTER TEXT SEARCH CONFIGURATION ngram2 reset gram_size,grapsymbol_ignore;
  --查询配置信息，分词相关配置选项有值
  select cfgname,cfoptions from pg_ts_config where cfgname='ngram2';
  --删除文本搜索配置
  DROP TEXT SEARCH CONFIGURATION ngram2;