Queries

how do i make a querie that finds relations to a "part number" for models, and assemblies, but when it finds a relation of part number with a Product, it gives additional attributes for information?
this code that i have so far doesn't do waht i want,, showing

part_number
2 2 1 1 Kilimanjaro
2 2 2 2 Dolomiti
2 2 11 11 Mud Zinger 1

and jumbling up information

select part_inventory.part_number, assemble.assemble_number, model.model_number, product.serial_number, model.model_name
from part_inventory inner join model_configuration on part_inventory.part_number = model_configuration.part_number
inner join model on model.model_number = model_configuration.model_number
inner join assembly_configuration on part_inventory.part_number = assembly_configuration.part_number
inner join assemble on assemble.assemble_number = assembly_configuration.assembly_number
inner join product on product.serial_number = model.serial_number
where part_inventory.part_number = 2;