postgresql語法

登陸

psql -U user [-d dbname]

切換數據庫,至關於mysql的use dbname

\c dbname

列舉數據庫，至關於mysql的show databases

\l

列舉表，至關於mysql的show tables

\dt

查看錶結構，至關於desc tblname,show columns from tbname

\d tblname

查看索引 

\di

導入

psql  -U username -W -d dbname -f xx.sql

psql -U username database(defailt username) < /data/dum.sql

xzcat /data/dum.sql.xz | psql -h localhost -U username database(default username)

導出

pg_dump -h localhost -U username database(default postgres) >/data/dum.sql

pg_dump -h localhost -U username database(default username) -t table >/data/dum.sql

xz dum.sql