postgreSql 入门常用命令

psql -U username -d dbname -h hostip -p port

\c dbname

\d  tablename

\d+  tablename

q

create table REL_CROSS_NODE(ID integer, CROSS_ID integer);

drop table REL_CROSS_NODE;

alter table [表名] add column [字段名] [类型];

alter table [表名] rename column [旧字段名] to [新字段名];

alter table [表名] drop column [字段名];

insert into [表名] (字段1,字段2) values (值1,值2);

 delete from [表名] where [该行特征]; 

update [表名] set [目标字段名]=[目标值] where [该行特征]

drop table [表名];

(select node_id from node where node_id=1 or node_id=2) except (select node_id from node where node_id=1);
 node_id 
---------
       2
(1 row)