Re: Help on SQL query

> On Feb 15, 2019, at 10:28 AM, Andrew Gierth <andrew(at)tao11(dot)riddles(dot)org(dot)uk> wrote:
>
>>>>>> "Ian" == Ian Tan <iantan1268(at)gmail(dot)com> writes:
>
> Ian> How do I write an SQL query so that the "name" text in car_parts
> Ian> are added to the bill_of_materials table, so that it looks like
> Ian> this:
>
> The only trick with this is that you need to join the car_parts table
> twice (once for parent and once for child), and to do that you need to
> give it different alias names:
>
> select bom.parent_id,
> ppart.name as parent_name,
> bom.child_id,
> cpart.name as child_name
> from bill_of_materials bom
> join car_parts ppart on (ppart.id=bom.parent_id)
> join car_parts cpart on (cpart.id=bom.child_id);
>
> --
> Andrew (irc:RhodiumToad)
>

Andrew, will you do my homework too?