在psql cli中，可以使用

\d+ <yourViewName>
\sv <yourViewName>

输出如下:

\d+ v_ma_students

                               View "public.v_ma_students"
 Column |         Type          | Collation | Nullable | Default | Storage  | De
scription
--------+-----------------------+-----------+----------+---------+----------+---
SOMETHINGS HERE

View definition:
 SELECT student.sno,
    student.sname,
    student.ssex,
    student.sage,
    student.sdept
   FROM student
  WHERE student.sdept::text = 'MA'::text;
Options: check_option=cascaded


\sv v_ma_students

CREATE OR REPLACE VIEW public.v_ma_students AS
 SELECT student.sno,
    student.sname,
    student.ssex,
    student.sage,
    student.sdept
   FROM student
  WHERE student.sdept::text = 'MA'::text
 WITH CASCADED CHECK OPTION

select definition from pg_views where viewname = 'my_view'

如果你想要一个ANSI SQL-92版本:

select view_definition from information_schema.views where table_name = 'view_name';

select pg_get_viewdef('viewname', true)

手册中列出了所有这些功能:

http://www.postgresql.org/docs/current/static/functions-info.html

在psql cli中，可以使用

\d+ <yourViewName>
\sv <yourViewName>

输出如下:

\d+ v_ma_students

                               View "public.v_ma_students"
 Column |         Type          | Collation | Nullable | Default | Storage  | De
scription
--------+-----------------------+-----------+----------+---------+----------+---
SOMETHINGS HERE

View definition:
 SELECT student.sno,
    student.sname,
    student.ssex,
    student.sage,
    student.sdept
   FROM student
  WHERE student.sdept::text = 'MA'::text;
Options: check_option=cascaded


\sv v_ma_students

CREATE OR REPLACE VIEW public.v_ma_students AS
 SELECT student.sno,
    student.sname,
    student.ssex,
    student.sage,
    student.sdept
   FROM student
  WHERE student.sdept::text = 'MA'::text
 WITH CASCADED CHECK OPTION

一直不得不返回这里查找pg_get_viewdef(如何记住!!)，所以搜索一个更容易记住的命令…并得到了它:

\d+ viewname

你可以通过输入\?在PGSQL命令行。

额外提示:emacs命令sql-postgres使pgsql更加方便(编辑、复制、粘贴、命令历史)。