标签:window warning delete mysq 信息 mina 设置 -- ble
最近在做mysql的数据导入导出得到的一些经验,记录下。 1.首先要开通导入导出的功能,需要设置一个mysql的配置 可以在 my.conf 文件的最后增加配置项 secure-file-priv=‘‘ 用这个命令查到当前的设置 SHOW VARIABLES LIKE ‘%secure_file_priv%‘; 如果为 NULL 表示禁止导入导出,如果指定了具体路径,则导入导出必须在这个路径下,如果为空字符串,则可以导出到任意路径(必须要有足够权限写任意的路径权限) 如果权限不够则可以默认到mysql的数据文件目录; 没有设置的错误信息, 错误代码: 1290 The MySQL server is running with the --secure-file-priv option so it cannot execute this statement 2.权限问题,在windows下权限问题好解决。在linux下 mysql的用户权限有限,所以我只能默认导出的mysql的数据文件下。 -- 如果指定路径则需要当前用户具有很高的权限才行,默认的话基本可以导出 -- 默认路径为mysql的数据文件存放路径 可以用这个命令查看文件放哪个路径 SHOW VARIABLES LIKE ‘%datadir%‘ SELECT * INTO OUTFILE ‘2.txt‘ FIELDS TERMINATED BY ‘,‘ ENCLOSED BY ‘\"‘ LINES TERMINATED BY ‘\n‘ FROM mtdwgl_syn.irms_trans_pipehole; LOAD DATA INFILE ‘/data/mysql/2.txt‘ INTO TABLE mtdwgl_res.tb_irms_trans_pipehole CHARACTER SET utf8 FIELDS TERMINATED BY ‘,‘ ENCLOSED BY ‘\"‘ LINES TERMINATED BY ‘\n‘; 3.经过测试2300W条记录 导出花了1分46秒 SELECT * INTO OUTFILE ‘2.txt‘ FIELDS TERMINATED BY ‘,‘ ENCLOSED BY ‘\"‘ LINES TERMINATED BY ‘\n‘ FROM mtdwgl_syn.irms_trans_pipehole; Query OK, 23040110 rows affected (1 min 46.01 sec) 导入花了 3分22秒 LOAD DATA INFILE ‘/data/mysql/2.txt‘ INTO TABLE mtdwgl_res.tb_irms_trans_pipehole CHARACTER SET utf8 FIELDS TERMINATED BY ‘,‘ ENCLOSED BY ‘\"‘ LINES TERMINATED BY ‘\n‘; Query OK, 23040110 rows affected (3 min 22.10 sec) Records: 23040110 Deleted: 0 Skipped: 0 Warnings: 0
文件大小,测试的是2.txt文件,4.8G
sudo du -h /data/mysql/*.txt
480M /data/mysql/1.txt
4.8G /data/mysql/2.txt
标签:window warning delete mysq 信息 mina 设置 -- ble
原文地址:http://www.cnblogs.com/ringwang/p/7118428.html