mysql 导入导出

1.导出

mysqldump -h hostname -uroot dbname >dbname_$(date +"%Y%m%d").sql -p

2.导入

mysql -uroot dbname

3.MySQL 数据字典导出脚本

SELECT TABLE_NAME
,COLUMN_NAME
,column_type
,is_nullable
,column_default
,column_comment
,column_key
,extra
FROM information_schema.columns WHERE table_schema='dw_prod'
ORDER BY 1 ASC;