Oracle PL/SQL Tutorial/System Tables Data Dictionary/user col comments

Getting Column Comments

You can get the comments on your columns using user_col_comments.

   <source lang="sql">

SQL> -- create demo table SQL> create table myTable(

 2    id           NUMBER(2),
 3    value        NUMBER(6,2)
 4  )
 5  /

Table created. SQL> SQL> -- prepare data SQL> insert into myTable(ID, value)values (1,9)

 2  /

1 row created. SQL> insert into myTable(ID, value)values (2,2.11)

 2  /

1 row created. SQL> insert into myTable(ID, value)values (3,3.44)

 2  /

1 row created. SQL> insert into myTable(ID, value)values (4,-4.21)

 2  /

1 row created. SQL> insert into myTable(ID, value)values (5,10)

 2  /

1 row created. SQL> insert into myTable(ID, value)values (6,3)

 2  /

1 row created. SQL> insert into myTable(ID, value)values (7,-5.88)

 2  /

1 row created. SQL> insert into myTable(ID, value)values (8,123.45)

 2  /

1 row created. SQL> insert into myTable(ID, value)values (9,98.23)

 2  /

1 row created. SQL> SQL> select * from myTable

 2  /
       ID      VALUE

---

----------

        1          9
        2       2.11
        3       3.44
        4      -4.21
        5         10
        6          3
        7      -5.88
        8     123.45
        9      98.23

9 rows selected. SQL> SQL> SQL> SQL> COMMENT ON COLUMN myTable.id IS

 2  "id stores the id";

Comment created. SQL> SQL> SELECT *

 2  FROM user_col_comments
 3  WHERE table_name = "MYTABLE";

SQL> SQL> SQL> -- clean the table SQL> drop table myTable

 2  /

Table dropped.</source>