MySQL大表数据导入到MongoDB-编程知识

MySQL大表数据导入到MongoDB

修改参数，开启into outfile的功能

secure_file_priv='/home/backups/mysql_outfile'

重启数据库是参数生效

按条件导出MySQL数据

select  * from receipt_receive_log  where gmt_create >= '2020-04-13 00:00:00' and gmt_create<= '2020-07-13 00:00:00' INTO OUTFILE '/home/backups/mysql_outfile/receipt_receive_log_2020_q1.csv' FIELDS TERMINATED BY ',' ENCLOSED BY "'" LINES TERMINATED BY '\n';

FIELDS TERMINATED BY ',' 字段用逗号分割

ENCLOSED BY "'" 每个字段的数据用引号

LINES TERMINATED BY '\n' 每行数据换行

导出表头

注意表头的字段不能加引号，否则导入到MongoDB的时候字段名也会有引号

SELECT column_name FROM information_schema.columns WHERE table_schema = 'workingplatform_prod' AND table_name = 'receipt_receive_log' INTO OUTFILE '/home/backups/mysql_outfile/receipt_receive_log_tableHead.csv' FIELDS TERMINATED BY ',' LINES TERMINATED BY ',';

创建导入账号

在要导入数据的MongoDB数据库下创建一个账号

db.createUser( {user: "user_name",pwd: "123",roles: [ { role: "readWrite", db: "db_name" }] })

使用mongoimport导入

mongoimport --headerline --type=csv -d workingplatform_test -c receipt_receive_log_2020_q1 -h --port=27017 -u workingplatform_test_rw -p 123 --file=receipt_receive_log_q1.csv -vv