PostgreSQL 列所有表结构的查询语句

SELECT   tablename   FROM   pg_tables  
WHERE   tablename   NOT   LIKE   'pg%'  
AND tablename NOT LIKE 'sql_%'
ORDER   BY   tablename;

查询表t_appointment_apply表的字段信息
SELECT a.attnum,a.attname AS field,t.typname AS type,a.attlen AS length,a
.atttypmod AS lengthvar,a.attnotnull AS notnull from pg_class c,pg_attribute a,pg_type t where c.relname='t_appointment_apply' and a.attnum>0 and a.attrelid=c.oid and a.atttypid=t.oid