Retrieving Comments from a PostgreSQL DB

Question

I\'m running a project on a Postgres database and need to retrieve the comments on columns within the DB to be used as table headings and such. I have seen that there are a

Answer 1

Take care with schemas, this code considers them:

SELECT
    cols.column_name, (
        SELECT
            pg_catalog.col_description(c.oid, cols.ordinal_position::int)
        FROM
            pg_catalog.pg_class c
        WHERE
            c.oid = (SELECT ('"' || cols.table_name || '"')::regclass::oid)
            AND c.relname = cols.table_name
    ) AS column_comment
FROM
    information_schema.columns cols
WHERE
    cols.table_catalog    = 'your_database'
    AND cols.table_name   = 'your_table'
    AND cols.table_schema = 'your_schema';

References:

• Postgresql Document Table and Column Description Comments on Table and Column

• Determining the OID of a table in Postgres 9.1?