How can I change my nested table column?

Hi all

For example.

Create Table MyTab
(
Number of Srno,
SName varchar2 (100),
Addr varchar2 (100)
);

This is my original table, but now I want to change my address of column in a nested table that having several columns in it.


create or replace type AddrTyp as an object
(
LINE1 varchar2 (50).
Line2 varchar2 (50).
VARCHAR2 (50) line 3.
4 varchar2 (50).
line5 varchar2 (50).
postadd varchar2 (10)
);


CREATE OR REPLACE
TYPE DelAddr IS TABLE of the AddrTyp;


It comes up ok but now I want to change my addr nested table column.

as...


ALTER table MyTab
change the waterfall (DelAddr Addr);

but it did not work.

any idea?

Indirectly!

SQL> alter table MyTab add addr2 DelAddr NESTED TABLE addr2 STORE AS addr2_ntab;

Table altered.

SQL> alter table MyTab drop column addr;

Table altered.
SQL> alter table MyTab rename column addr2 to addr;

Table altered.

SQL> desc MyTab
 Name                                      Null?    Type
 ----------------------------------------- -------- -----------------
 SRNO                                               NUMBER
 SNAME                                              VARCHAR2(100)
 ADDR                                               DELADDR

SQL>  

Tags: Database

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