Copy table structure in the same database as Oracle users

I. Syntax of copying a table:

Create table name as (subquery)

Example: copy the emp table in scott, the default database installed by El.

Create table myemp as (select * from emp );

In this example, the table structure and table content are copied together.

Ii. Copy the table structure

Create table name as (subquery where 1 = 2), that is, adding a condition that is never possible (1 = 2) on the basis of the above ), in this case, only the table structure is copied, but the table content is no longer displayed.

Example: create table myemp2 as (select * from emp where 1 = 2 );