Re: CREATE TABLE LIKE and SERIAL

[Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>]

Thom Brown <thombrown(at)gmail(dot)com> writes:
> I can see why you wouldn't expect it to end up sharing the same
> sequence.  If you were to manually create a sequence and wanted to use
> it on a column, you probably wouldn't bother using the SERIAL
> datatype, but use integer instead.  So really since we know the first
> table has a datatype of SERIAL on one of its columns, we might instead
> wish to have it create a new implicit sequence instead of merely
> converting it to an INTEGER datatype and adding a default constraint
> to the same sequence as the original table.

Thinking of SERIAL as a type is your first mistake ;-).  It is not a
type.  It is a shorthand for making a sequence and sticking a suitable
default on a plain integer column.  So what LIKE sees is an integer
column with a default, and it copies that.

			regards, tom lane