TSQL - Find orders with more than one order line

This problem has screwed with my heads for long enough!

I have an Order table and and Order Lines table. I need to identify the orders that have more than one order line. Each order line has the Order ID referenced to it. All I really need is the Order Numbers identifed.

Any help would be greatly appreciated!
ComfortablyNumbAsked:
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Raja Jegan RConnect With a Mentor SQL Server DBA & ArchitectCommented:
Hope this helps
SELECT ot.order_id, count(order_line_id) cnt
FROM [ORDER] ot, order_lines ol
WHERE ot.orderid = ol.order_id
GROUP BY ot.order_id
HAVING count(order_line_id) > 1

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cjonlineCommented:
select * from orderstable inner join orderdetailtable on orderstable.orderid  = orderdetiltable.orderid where count(orderdetailstable.orderid) > 1
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ComfortablyNumbAuthor Commented:
Thank you very much. I've obviously got a lot to learn!!!
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