>>>>I have these three tables -
>>>>

>>>>Table: Products
>>>>ProdId	Prod_Series 			Prod_No
>>>>------------------------------------------------
>>>>6090	ML350T02 P1266 2059 FR		291378-051
>>>>6091	ML350T02 P1266 512 M1 BRZL	225861-201
>>>>6092	ML350T02 P1266 EU2002 EURO	277811-421
>>>>6093	ML350T02 P1266 SP3636 EURO	267546-421
>>>>
>>>>Table: ProductParts
>>>>RowId	ProdId	PartId
>>>>------------------------------------------------
>>>>246432	6090	5526
>>>>246433	6091	5067
>>>>246434	6091	4638
>>>>246435	6091	4639
>>>>246436	6091	4682
>>>>
>>>>Table: Parts
>>>>PartId	Part_Num	Keyword		Category			Desc
>>>>------------------------------------------------------------------------------------------------
>>>>5762	228523-001	Cover			Mechanical PartsAccess panel (top cover) - Includes built-in hood latch
>>>>5763	228524-001	Processor		Logic Board			Intel Pentium III processor - 1.13GHz (Tualatin, 133MHz front...
>>>>5764	228525-001	Airflow Guide	Mechanical Parts	Processor airflow guide (air baffle)
>>>>5765	228526-001	Manual/Software	Mechanical Parts	Localization kit (country kit) - Use with 2.40GHz and 2...
>>>>5766	232793-001	Rack Mount Kit	Mechanical Parts	Rack mount kit - Includes left slide assembly for stand...
>>>>5767	232794-001	Rack Mount Kit	Mechanical Parts	Rack mount kit - Rails for 2-post Telco type rack
>>>>
>>>>
>>>>

>>>>
>>>>
>>>>The user can enter anything for a query. If the query string is found in Product.Prod_Series or Product.Prod_No, the return the
>>>>Product row and all child rows for it. If the query string is found in the Part.Part_Num, Part.Keyword, Part.Category, or Part.Desc,
>>>>then return the Product Row the part belongs to, as well as the part row.
>>>>
>>>>Think TreeView. If the text I search for is a parent, return the parent and all children. If the search text is a child, return the only
>>>>the child an it's parent.
>>>
>>>Assuming 'Products' is the parent that implies a part is only used in a single product. Is that the case ?
>>>>
>>>>Is this possible in one query? Anyone have any thoughts on how to do this?
>>
>>No, it is not. That's why there's a ProductParts table.
>
>So how do you select 'the child and it's *parent* when it can have more than one ?

That is the question, now isn't it

I think Cetin's response will work though it might only be limited to one level.