How to create tables in sql?

Answer 1

For which database? MySQL, Oracle, other?

Answer 2

There are two ways to do this, you can use a database management tool/wizard or you can write it, as SQL file. Either way there is no simple way to explain, each database system has their tools and some implements proprietary commands incompatible with others.

You should have provided more information on the context, as you can see, unclear queries do not gain as much attention, be more descriptive, if you can.