理解部分:
逻辑备份:只备份表中的某一些符合调价的数据,而非全部数据。但是很独特的地方在于导出来的是文本信息,那么很显然比mysqldump节约空间的,这是毋庸置疑的;但是库表它本身没有办法创建。我们也难以保证是精确的;
所以还是mysqldump好用的。只有备份表总的部分行的时候才会使用它进行,甚至于备份部分行、部分字段的时候会用到。格式: SELECT clause INTO OUTFILE '' LOAD DATA INFILE '' INTO TABLE tb_name
1、连入MySQL:

2、查看students表中的所有Gender是 M 导出:

3、执行此命令将其导入/tmp:

4、查看/tmp下的stu.txt文本信息:

5、创建一个与students表一样结构的表:

6、查看表结构:

7、注意这时候是没有插入数据的:

8、导入/tmp/下的stu.txt 文本:

9、查看表中的数据是否被导入:

10、还有其它的备份工具请出门左转查看:mysqldump、innobackupex、LVM快照的配置解析:

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