Here is all the indexes for the tables. If you need different format, let me know. P.S., the view only creates aliases for some of the columns in the oeordlin_sql...

• This reply was modified 4 years, 3 months ago by Jackie Lowery.

I think you're right.  I've found that if I use the LOOP hint to force a loop join, which passes thru the ord_no and line_seq_no thrue to the wspkglin join...

• This reply was modified 4 years, 3 months ago by Jackie Lowery.

It’s funny nobody suggested the most obvious choice in such situation - RIGHT JOIN:

Select s.Shipment_No
     , p.pkg_no
     ,...

I would think the subquery would (almost) certainly be able to take advantage of the fact that the query only needs to lookup a single Shipment_No, rather than processing...

This subquery actually seems to work well.  Any ideas if it would have any performance benefits over the nested join query?

select s.Shipment_No, pl.pkg_no, pl.ord_no
from wsPKGShipment s
left join...

Thanks for that, now I'm clear.

Yeah, I think the first query you posted should do that.

As to performance, make sure the s and p tables have an index on...

Let me try to explain what i need better.  I want all shipments, regardless of whether they have matching wsPKG or wsPKGlin records.  I want to join wsPKG records to...

• This reply was modified 4 years, 4 months ago by Jackie Lowery.

If I understand your requirements correctly, the code below will do what you want.

As to performance, make sure the s and p tables have an index on Shipment_No and...

Might this work?

select s.Shipment_No, p.pkg_no, l.ord_no  -- You need to get ord_no from either s or p instead
from wsPKGShipment s
left join wsPKG p
ON s.Shipment_No =...

After rewriting the query and adding new indexes:

Total Cpu -  1 min 7 sec -> .488 sec

Total Logical Reads - Over 78M -> 150K.

Very impressive improvements.  Thanks guys !!

The ID is included to make sure the key is unique.  Unique indexes process better in SQL Server.  All key columns from the clustered index are automatically included in...

I suggest creating the following indexes to support the query.  If you'd like to adjust other indexes on the tables also, just let me know.

CREATE UNIQUE...

            
July 21, 2021 at 2:14 pm
            
#3912474

            
            
                                                
        

Results attached.

I can't offer index recommendations without seeing the DDL for the tables, including all current index definitions.  The most critical index is the clustered index, so that should be...

• This reply was modified 4 years, 4 months ago by Jackie Lowery.