What is best strategy to create trigger?

Hello,
What is best strategy to create trigger?
I'm trying to create trigger in same migration file where create table is:

```
-- This is a sample migration.
create table people(
id serial primary key,
first_name varchar not null,
last_name varchar not null,
created_at timestamp without time zone NOT NULL DEFAULT CURRENT_TIMESTAMP,
updated_at timestamp without time zone,
);

CREATE TRIGGER set_update_timestamp
BEFORE UPDATE
ON people
FOR EACH ROW
EXECUTE PROCEDURE trigger_set_timestamp();

---- create above / drop below ----

drop table people;
```

I got error:
ERROR: syntax error at or near ")" (SQLSTATE 42601)
LINE 9: )
^

Reproduce the migration shown in the issue and inspect how Tern handles the create-table and trigger statements in the same migration. Check the PostgreSQL error location and the migration's up/down sections first; done means documenting or validating the supported strategy for creating and removing a trigger.

Written by the indexing model from the issue text.