内存数据库专门针对于数据量大且查询次数多的情况下使用

DataBaseoffce databaseoffce = new DataBaseoffce(); 创建数据库 databaseoffce.createDatabas("csxhzsd", "c:"); databaseoffce.createDatabase("csxhzsd3", "c:"); 选择数据库 databaseoffce.use("csxhzsd"); 创建数据表 databaseoffce.createTable("csxha1", "csxh String, c1 Integer, b1 long , l1 short, m1 Integer"); databaseoffce.createTable("csxha2", "csxh String, c2 String, a35 long , ll short, ml Integer, mk1 short, mk2 String,lin9 double"); databaseoffce.createTable("csxha3", "csxh135 String,c22 String"); for(int i=0 ;i <500;i ++) { 插入数据 // System.out.println(i); databaseoffce.insert("csxha1", "3 2 3 7 3");//0 databaseoffce.insert("csxha1", "5 3 53 57 52");//0 databaseoffce.insert("csxha1", "a 5 52 78 35");//0 } for(int i=0 ;i < 500 ;i ++) { databaseoffce.insert("csxha2", "2 2 3 7 3 7 8 5");//0 databaseoffce.insert("csxha2", "abg 5 53 92 52 7 8 7");//0 databaseoffce.insert("csxha2", "3 3 52 78 35 9 11 9");//0 }--------------------------------------------- databaseoffce.use("csxhzsd") System.out.println(databaseoffce.select("csxha2",null,"lin9=7 and c2=5 and ll=92 or c2=67 and ll=78 or c2=2 and not ml=3".trim())); 简单的sql语句 System.out.println(" ***************************************** "); System.out.println(databaseoffce.select("csxha2",null,"lin9=7 and c2=5 and ll=92 or c2=67 and ll=78 or c2=2 and not ml=3".trim())); System.out.println(" ***************************************** "); databaseoffce.use("csxhzsd3"); 删除数据库 databaseoffce.dropDatabase_jc("csxhzsd");//"csxh=100 or c2=30 or a35=1" 删除数据 databaseoffce.delete("csxha2","lin9=7"); 删除表结构 databaseoffce.droptable("csxha2"); 删除库结构 databaseoffce.dropDatabase_jc("csxhzsd"); 内存数据库 专门针对于需要大量数据且查询次数多的情况下使用，请您多指点 作者 QQ 502905196