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troubleshooting Question

SQL script question

Avatar of abarefoot
abarefoot asked on
Scripting LanguagesSQL
25 Comments1 Solution179 ViewsLast Modified:
Below are the tables.  I need to find the last PO and Invoice for item 3m05620 which should be invoice 95.

po_no     supplier_id
1448099            123
1448099            123
1448099            123

item_id                      po_no
3m05620            1448099
3m05620            1448099
3m05620            1448099
3m05620            1448099

invoice_no      invoice_date      po_no
90            7/1/17            1448099
91            10/1/17            1448099
92            9/1/17            1448099
94            8/1/17            1448099
95            11/1/17            1448099
96            6/1/17            1448099

Results needed:
item               po_no            invoice_no       invoice date
3m05620       1448099            95                     11/1/17

Below is the script I have.  This script shows the last invoice_no is 96 and I want it to show the last invoice no based on invoice date so 95 since it has the most recent invoice date.

SELECT        p21_view_po_line.item_id, MAX(p21_view_po_hdr.po_no) AS po_no, p21_view_po_hdr.supplier_id, MAX(p21_view_apinv_hdr.invoice_no) AS invoice_no,
                         MAX(p21_view_apinv_hdr.invoice_date) AS invoice_date
FROM            p21_view_po_hdr INNER JOIN
                         p21_view_apinv_hdr ON p21_view_po_hdr.po_no = p21_view_apinv_hdr.po_no INNER JOIN
                         p21_view_po_line ON p21_view_po_hdr.po_no = p21_view_po_line.po_no
GROUP BY p21_view_po_line.item_id, p21_view_po_hdr.supplier_id