Mathias wrote:
Selon Russell Horn <[EMAIL PROTECTED]>:
This must have come up before, but I've not found it using a google
search.
I have two tables customer and purchases
customer:
customerID
customerName
purchases:
purchaseID
customerID
purchaseDate
purchaseValue
Is it possible in MySQL to join the tables so I only get the value of
the latest purchase? Or is this something that's better done in PHP, say
select all my customers and then one at a time do a query to select the
value of their last purchase?
Thanks!
Russell.
Hi ,
join the tables with max(purchase_date) in the select,and of course group by
customer_id
Hope that helps
:o)
Mathias
Join with MAX(purchase_date)? Do you mean in a subquery? If so, that
requires 4.1.
This is a FAQ. Three solutions are given in the manual, a subquery solution
for 4.1+, a temporary table solution for all versions, and a trick.
<http://dev.mysql.com/doc/mysql/en/example-maximum-column-group-row.html>
Michael
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