SQL DESC Statement (Describe Table)

SQL DESC statement use for describe the list of column definitions for specified table. You can use either DESC or DESCRIBE statement. both are return same result.

DESCRIBE statement to get following information:

Column Name
Column allow NULL or NOT NULL
Datatype of the Column
With database size precision and If NUMERIC datatype scale.

SQL DESC Syntax

SQL DESCRIBE Table Column use following syntax,

DESC table_name

SQL DESC Example

SQL> DESC users_info;

Name                           Null?    Type
------------------------------ -------- ----------------------------

NO                             NOT NULL NUMBER(3)
NAME                                    VARCHAR2(30)
ADDRESS                                 VARCHAR2(70)
CONTACT_NO                              VARCHAR2(12)

SQL DESCRIBE Syntax

DESCRIBE table_name

SQL DESCRIBE Syntax

SQL> DESCRIBE users_info;

Name                           Null?    Type
------------------------------ -------- ----------------------------

NO                             NOT NULL NUMBER(3)
NAME                                    VARCHAR2(30)
ADDRESS                                 VARCHAR2(70)
CONTACT_NO                              VARCHAR2(12)