全文检索- Oracle/MySql/达梦

简单使用语法：

MySql：

ALTER TABLE dataset_ods ENGINE = MyISAM; //5.6后的InnoDB支持全文索引
ALTER TABLE dataset_ods ADD FULLTEXT (abstract);

SELECT * FROM dataset_ods  WHERE MATCH(abstract) AGAINST('XX');

Oracle：

CREATE INDEX FullTextIndex_dataset_ods ON dataset_ods( ABSTRACT ) INDEXTYPE is CTXSYS.CONTEXT;

BEGIN
  ctx_ddl.sync_index ('fulltextindex_dataset_ods', '2M');
  ctx_ddl.optimize_index ('fulltextindex_dataset_ods', 'full',null,null,null);
END;

SELECT * FROM dataset_ods  WHERE CONTAINS (ABSTRACT ,'XX')>0

达梦：

create context index FullTextIndex_dataset_ods on dataset_ods(ABSTRACT)LEXER DEFAULT_LEXER;

DM管理工具->全文检索->填充

SELECT * FROM dataset_ods WHERE CONTAINS (ABSTRACT,'XX')