Treat UUIDs as strings

[fraenky8]

@stdinltd thanks for opening this PR.

• Can you provide some more information on this? Which database supports these as native, builtin data type? A quick search revealed PostgreSQL?
• Can you give examples on:
  • How the generated struct would look like right now and after the PR applied?
  • How a simple select on this data type looks like, is it returned as string (standard form) or any other format?

Can you also provide at a unit test in the form of func TestRun_UUIDColumns(t *testing.T) to cover this new type? Check the existing ones for examples.

Thanks!

[ricleal-fugue]

Hey!

We are using tables-to-go in our project and I just stumble up on this PR.

Yes, it's PostgreSQL. If we have primary keys (that are never null) of type UUID, the tables-to-go generates sql.NullString (or *string) instead of string. If we have a db table:

+-----------------+--------------------------+-----------+
| Column          | Type                     | Modifiers |
|-----------------+--------------------------+-----------|
| id              | uuid                     |  not null |

The tables-to-go output ID sql.NullString / *string..... I think this PR corrects this to ID string ....

[fraenky8]

Fixed by #42