摘要:
1.B-Tree索引例子CREATE TABLE `test`.`student` ( `name` VARCHAR(45) NULL , `dob` DATE NULL , `desc` VARCHAR(45) NULL , INDEX `btree` USING BTREE (`name` ASC, `dob` ASC, `desc` ASC) )ENGINE = MyISAMDEFAULT CHARACTER SET = utf8COLLATE = utf8_general_ci;BTree索引起作用的情况1)匹配全名:例如,可以帮助查找 name = "Jack" 阅读全文