To select an existing IDENTITY column into a new table, include the column name (or the syb_identity keyword) in the select statement’s column_list:
select column_list into table_name from table_name
The following example creates a new table, stores_cal_pay30, based on columns from the stores_cal table:
select record_id, stor_id, stor_name into stores_cal_pay30 from stores_cal where payterms = "Net 30"
The new column inherits the IDENTITY property, unless any of the following conditions is true:
The IDENTITY column is selected more than once.
The IDENTITY column is selected as part of an expression.
The select statement contains a group by clause, aggregate function, union operator, or join.