Re: How to retrieve Comment text using SQL, not psql?

[Melvin Davidson <melvin6925@xxxxxxxxx>]

This will give the comment on your table and any column:

SELECT DISTINCT ON (c.relname)
       n.nspname as schema,
       c.relname,
       a.rolname as owner,
       0 as col_seq,
       '' as column,
       d.description as comment
  FROM pg_class c
LEFT  JOIN pg_attribute col ON (col.attrelid = c.oid)
LEFT  JOIN pg_description d ON (d.objoid = col.attrelid AND d.objsubid = 0)
  JOIN pg_namespace n ON (n.oid = c.relnamespace)
  JOIN pg_authid a ON ( a.OID = c.relowner )
  WHERE n.nspname NOT LIKE 'information%'
    AND relname NOT LIKE 'pg_%'
    AND relname NOT LIKE 'information%'
    AND relname NOT LIKE 'sql_%'
    AND relname = 'articlestats'
    AND relkind = 'r'
    AND d.description IS NOT NULL
UNION
SELECT n.nspname as schema,
       c.relname,
       '' as owner,
       col.attnum as col_seq,
       col.attname as column,
       d.description
  FROM pg_class c
  JOIN pg_attribute col ON (col.attrelid = c.oid)
  LEFT JOIN pg_description d ON (d.objoid = col.attrelid AND d.objsubid = col.attnum)
  JOIN pg_namespace n ON (n.oid = c.relnamespace)
  JOIN pg_authid a ON ( a.OID = c.relowner )
WHERE n.nspname NOT LIKE 'information%'
  AND relname NOT LIKE 'pg_%'
  AND relname NOT LIKE 'information%'
  AND relname NOT LIKE 'sql_%'
  AND relname = 'articlestats'
  AND relkind = 'r'
  AND d.description IS NOT NULL
  AND col.attnum >= 0
ORDER BY 1, 2, 4;

Learn the catalogs and you will learn PostgreSQL!

On Sat, May 30, 2015 at 7:58 AM, Pavel Stehule <pavel.stehule@xxxxxxxxx> wrote:

Hi

you can call function obj_description http://stackoverflow.com/questions/11493978/how-to-retrieve-the-comment-of-a-postgresql-database

http://www.postgresql.org/docs/9.1/static/functions-info.html

For tables

SELECT pg_catalog.obj_description('tablename'::regclass, 'pg_class') as "Description;

Regards

Pavel Stehule

2015-05-30 13:48 GMT+02:00 Bob Futrelle <bob.futrelle@xxxxxxxxx>:

Using pgAdmin3 I've tried this and variations on it.   All are rejected.

select COMMENT ON TABLE articlestats 

No answer here,

http://www.postgresql.org/docs/9.3/static/sql-comment.html

pgAdmin3 had no problem with entering a comment:

COMMENT ON TABLE articlestats IS 'Comprehensive data for every article.'

 - Bob Futrelle

--

Melvin Davidson
I reserve the right to fantasize.  Whether or not you
wish to share my fantasy is entirely up to you.