pgsql查表结构和函数内容

Posted 2021-08-27 临界稳态

方式一：

 1 SELECT a.attnum,
 2        a.attname AS field,
 3        t.typname AS type,
 4        a.attlen AS length,
 5        a.atttypmod AS lengthvar,
 6        a.attnotnull AS notnull,
 7        b.description AS comment
 8   FROM pg_class c,
 9        pg_attribute a
10   LEFT OUTER JOIN pg_description b 
11     ON a.attrelid=b.objoid 
12    AND a.attnum = b.objsubid,
13        pg_type t
14  WHERE c.relname = \'tablename\'
15    and a.attnum > 0
16    and a.attrelid = c.oid
17    and a.atttypid = t.oid
18  ORDER BY a.attnum;

--查询prosrc显示空白，因为第一行记录默认是\\t，复制出来，既可以看到函数内容
 select prosrc from pg_proc where proname=\'function_name\'

方式二：

 --使用psql进入命令窗口
 
 psql -d dw
 
 --查看表结构
 [dw] \\d tablename
 
  --查看表结构
 [dw] \\df+ function_namename