Re: Help on SQL query

> On Feb 15, 2019, at 10:28 AM, Andrew Gierth <[email protected]> wrote:
> 
>>>>>> "Ian" == Ian Tan <[email protected]> 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?