mysql load data infile 的用法(40w数据 用了3-5秒导进mysql)
测试数据的时候,生成txt文件应该快点,再用这种方式导入到mysql 速度上快点。40w数据 用了3-5秒导进mysql,牛逼毁了
到的时候,有种情况:
)在远程客户端(需要添加选项:)导入远程客户端文本到,需指定(默认就是)加选项会放弃数据,加选项会更新数据,都不会出现唯一性约束问题。
)在本地服务器导入本地服务器文本到,不指定,出现唯一性约束冲突,会失败回滚,数据导入不进去,这个时候就需要加或者来导入数据。
)本地服务器导入本地服务器文本
INTO TABLE tmp_loaddata FIELDS TERMINATED BY ',';
对于冲突的数据丢弃掉。
INTO TABLE tmp_loaddata FIELDS TERMINATED BY ',';
对于冲突的数据进行更新。
)远程客户端导入远程客户端文本
INFILE '/tmp/2.txt' INTO TABLE tmp_loaddata FIELDS TERMINATED BY ',';
远程客户端,还需要加参数指定。
--show-warnings -v -v -v \
--show-warnings -v -v -v \
INTO TABLE tmp_loaddata FIELDS TERMINATED BY ','";
--show-warnings -v -v -v \
INTO TABLE tmp_loaddata FIELDS TERMINATED BY ','";

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