--CREATE OR REPLACE PROCEDURE PROC_ZAD_3(TBL_NAME IN VARCHAR2, COL_NAME IN VARCHAR2 := NULL)
--IS
--  TOTAL_RECORDS NUMBER := 0;
--  COMMENT_TEXT VARCHAR2(50) := 'Total records: ';
--  STMT VARCHAR2(500) := '';
--BEGIN
--  IF COL_NAME IS NULL
--  THEN
--    STMT := 'SELECT COUNT(*) FROM "' || TBL_NAME || '"';
--    EXECUTE IMMEDIATE STMT INTO TOTAL_RECORDS;
--
--    COMMENT_TEXT := COMMENT_TEXT || TOTAL_RECORDS;
--
--    STMT := 'COMMENT ON TABLE "' || TBL_NAME || '" IS ''' || COMMENT_TEXT || '''';
--    EXECUTE IMMEDIATE STMT;
--  ELSE
--    STMT := 'SELECT COUNT(*) FROM (SELECT DISTINCT "' || COL_NAME || '" FROM "' || TBL_NAME || '")';
--    EXECUTE IMMEDIATE STMT INTO TOTAL_RECORDS;
--
--    COMMENT_TEXT := COMMENT_TEXT || TOTAL_RECORDS;
--
--    STMT := 'COMMENT ON COLUMN "' || TBL_NAME || '"."' || COL_NAME || '" IS ''' || COMMENT_TEXT || '''';
--    EXECUTE IMMEDIATE STMT;
--  END IF;
--END;