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create or replace view dba_col_comments
(owner, table_name, column_name, comments)
as
select u.name, o.name, c.name, co.comment$
from sys.obj$ o, sys.col$ c, sys.user$ u, sys.com$ co
where o.owner# = u.user#
  and o.type# in (2, 4)
  and o.obj# = c.obj#
  and c.obj# = co.obj#(+)
  and c.intcol# = co.col#(+)
  and bitand(c.property, 32) = 0 /* not hidden column */

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SQL codeSELECT'comment on column'|| t.table_name||'.'|| t.column_name||' is'''|| t.comments||''';'from user_col_comments t;


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