If you are having issues dropping a postgres database the issue is more than likely that a user is accessing the database you are attempting to drop. There isn’t technically a way to force drop the po

服务启动：    1)#service postgresql start    2)#/etc/init.d/postgresql start    3)#su  postgresql       $ pg_ctl startPostgreSQL的进程号:1210、1207、服务启动：    1)#service mysqld start    2)#/et

连接数据库, 默认的用户和数据库是postgrespsql -U user -d dbname切换数据库,相当于mysql的use dbname\c dbname列举数据库，相当于mysql的show databases\l列举表，相当于show tables\dt查看表结构，相当于desc tblname,show columns from tbname\

1. Export data from MySQL$mysqldump -u root -p -c db_name table_name >table_name.sql