solrserver.java public class solrServer { private solrServer(){}; final static String SOLR_URL = "http://localhost:8080/solr/test"; private static HttpSolrClient server = null; public static HttpSolrClient getServer(){ if(server == null){ server
查看表的索引 show create table 表名; show index from 表名; show keys from表名; 添加索引 alter table 表名 add index 索引名字 (索引字段): alter table goods add index price (shop_price); 1.PRIMARY KEY(主键索引)mysql>ALTER TABLE `table_name` ADD PRIMARY KEY ( `column` )