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POMultiple INNER JOINs, searching for records between a year range
 

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    <p>With regards to the following statement:</p> <pre><code>SELECT * FROM explorer.booking_record booking_record_ INNER JOIN explorer.client client_ ON booking_record_.labelno = client_.labelno INNER JOIN explorer.tour_hotel tour_hotel_ ON tour_hotel_.tourcode = booking_record_.tourrefcode INNER JOIN explorer.hotelrecord hotelrecord_ ON tour_hotel_.hotelcode = hotelrecord_.hotelref WHERE booking_record_.bookingdate NOT LIKE '0000-00-00' AND booking_record_.tourdeparturedate NOT LIKE '0000-00-00' AND (hotelrecord_.hotelgroup = "LPL" AND YEAR(booking_record_.tourdeparturedate) BETWEEN YEAR(AddDate(Now(), Interval -5 Year)) AND YEAR(Now()) </code></pre> <p>My MySQL skills are certainly not up to scratch, the actual result set I wish to find is "<strong>a customer who has been to 5 or more LPL hotels in the past 5 years</strong>". So far I haven't got as far as dealing with the count as I'm getting a huge number of results with some 250+ per customer.</p> <p>I assume this is to do with the way I'm joining tables. Schema wise the booking_record table contains a tour reference code, which links to tour_hotel which then contains a hotelcode which links to hotelrecord. This hotelrecord table contains the hotelgroup.</p> <p>The client table is joined to the booking_record via a booking reference and a client may have many bookings.</p> <p>If anyone could suggest a way for me to do this I'd be very grateful and hopefully learn enough to do it myself next time! I've been scratching my head over this one for a few hours now!</p> <p>Customers may have many bookings within booking_record</p> <p>Daniel.</p>
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