\dt  

SELECT   viewname   FROM   pg_views  WHERE     schemaname ='public'  PostgreSQL获取数据库中所有view名 视图

SELECT   viewname   FROM   pg_views  WHERE     schemaname ='public'

SELECT a.attnum,

a.attname AS field, t.typname AS type, a.attlen AS length, a.atttypmod AS lengthvar, a.attnotnull AS notnull, b.description AS comment FROM pg_class c, pg_attribute a LEFT OUTER JOIN pg_description b ON a.attrelid=b.objoid AND a.attnum = b.objsubid, pg_type t WHERE c.relname = 'udoc_saldiscount' and a.attnum > 0 and a.attrelid = c.oid and a.atttypid = t.oid ORDER BY a.attnum;