Question

In MySQL I have two tables, say Customers and Orders, looking like this:

[Customers]
'ID'    'Name'    'Phone_nr'
 1       Ted       12345
 2       Anna      54321
 3       Anna      98765

[Orders]
'ID'    'Customer_ID'   'Price'
 1       2               100
 2       2               50
 3       1               70
 4       2               120
 5       3               80

Now i want to search for orders ID where ‘Customers.Name = Anna’ and Price > 60… I was hoping i do something like:

SELECT 'ID' FROM 'Orders' WHERE 'Customer_ID' = (SELECT 'ID' FROM 'Customers' WHERE 'Name' = 'Anna') AND 'Price' > 60

I want this to return Order IDs 1, 4 and 5.

So basically, make a search based on ID numbers found by a search in an other table…

This will likely be done on large tables with maybe 1k results for “Anna”, i would also be open to other ways of structuring the tables, especially if it requires less of the server, but i still have items in one table that are linked to items in an other table, and i need to filter both.

Hope i’m being clear about this, and thanks for your time.

Answer 1

SELECT o.id 
FROM   orders o, customers c 
WHERE  o.Customer_ID = c.ID AND 
       o.Price > 60         AND
       c.Name = 'Anna';