Put the column mark as "unused" test

zhaozj2021-02-16 82

SQL> DESC LUNARTEST;

Is the name empty? Type

------------------------------------- ---------------------------

Data_Object_id Number

Object_type varcha2 (18)

Created Date

Last_DDL_TIME DATE

TimeStamp varchar2 (19)

Status varchar2 (7)

Temporary varchar2 (1)

Generated varchar2 (1)

SECONDARY VARCHAR2 (1)

SQL> ALTER TABLE LUNARTEST SET UNUSED (DATA_Object_ID);

The table has been changed.

SQL> DESC LUNARTEST;

Is the name empty? Type

------------------------------------- ---------------------------

Object_type varcha2 (18)

Created Date

Last_DDL_TIME DATE

TimeStamp varchar2 (19)

Status varchar2 (7)

Temporary varchar2 (1)

Generated varchar2 (1)

SECONDARY VARCHAR2 (1)

SQL> ALTER TABLE LUNARTEST SET UNUSED (Object_Type, Created);

The table has been changed.

SQL> DESC LUNARTEST;

Is the name empty? Type

------------------------------------- -------------------------

Last_DDL_TIME DATE

TimeStamp varchar2 (19) status varchar2 (7)

Temporary varchar2 (1)

Generated varchar2 (1)

SECONDARY VARCHAR2 (1)

SQL>

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