Setting the comment of a column to that of another column in Postgresql

Question

Suppose I create a table in Postgresql with a comment on a column:

create table t1 (
   c1 varchar(10)
);
comment on column t1.c1 is \'foo\';

Answer 1

You can retrieve comments on columns using the system function col_description(table_oid, column_number). See this page for further details.