How can I create another table based on one existing table in db2?

In DB2, you can use the CREATE TABLE statement to create another table based on an existing table. Here is an example:

CREATE TABLE new_table AS (
    SELECT * FROM original_table
)
WITH NO DATA

In the example above, new_table is the name of the new table to be created, original_table is the name of the original table based on which the new table will be created. The option WITH NO DATA can be used to specify that data will not be copied to the new table. This means that the new table will have the same structure as the original table, but will not contain any data.

If you only want to create the structure of a new table without copying data, you can ignore the WITH NO DATA option, as shown below.

CREATE TABLE new_table AS (
    SELECT * FROM original_table
)

Please note that the new table will inherit the columns, data types, constraints, and other structures of the original table.