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Use Aggregate in Update Query Access
Posted on 2012-12-27
I am trying to update an invoice total on an invoice table from the lineitem totals on an invoice details table. I'm finding using an aggregate function within an update query is challenging.
I'm adding these total fields to make it easier for management to gather stats in our small firm.
Here is the SQL that I think should work but it not working and throwing a: "Syntax Error (missing operator) in query expression 't.total from tblPO p inner join..."
Any ideas?
I'm adding these total fields to make it easier for management to gather stats in our small firm.
Here is the SQL that I think should work but it not working and throwing a: "Syntax Error (missing operator) in query expression 't.total from tblPO p inner join..."
UPDATE P
SET p.PO_total = t.total FROM tblPO p
INNER JOIN
(SELECT tblPO_Details.PO_ID, SUM(tblPO_Details.subtotal) as total
FROM tblPO_Details
GROUP BY tblPO_Details.PO_ID) as t
ON t.PO_ID = p.PO_ID
Any ideas?
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4 Comments
I also tried this and it throws "must use updatable query"
UPDATE tblPO
INNER JOIN
(SELECT tblPO_Details.PO_ID, SUM(tblPO_Details.subtotal) as total
FROM tblPO_Details
GROUP BY tblPO_Details.PO_ID) as t
ON t.PO_ID = tblPO.PO_ID
SET tblPO.PO_total = t.total
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As far as I know, you can't use a subquery in your UPDATE statement like this in Access.
A workaround is to use your aggregate query to make a temporary table (turn it into a make table query) and use that table as the source for your UPDATE.
A workaround is to use your aggregate query to make a temporary table (turn it into a make table query) and use that table as the source for your UPDATE.
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