Unknow Column when using join on
I've been working through issues that resulted from using Join-Ons instead of comma joins. My SQL currently looks like this:
SELECT islandID AS parentIslandID, islandName, island.longDesc,
imageLocation, COUNT(resort.resortID) AS totalResorts, resort.resortID
FROM island, resort, images
join resort as r1
on island.islandID = resort.parentIslandID
where
r1.resortID IN (
59,62,65,69,71,72,74,75,76,82,86,89,91,93,95,105,
106,11开发者_JAVA百科6,117,118,120,121,122,123,124,125,126,127,
131,145,146,150,157,159,160,167,170,174,176,185,188,189,193,
194,198,199,200,203,205,213,217
)
&& resort.active = '-1'
GROUP BY resort.parentIslandID
ORDER BY totalResorts DESC
When executed, I get the following error:
#1054 - Unknown column 'island.islandID' in 'on clause'
I did some research and understand the origin of the error however I've tried to correct the issue by creating an alias for the "island" table. When I do this, columns like "island.longDesc" are then "unknown".
If anyone could correct what seems to be a minor syntax problem I would greatly appreciate it.
Images Structure:
CREATE TABLE `images` (
`imageID` int(11) NOT NULL auto_increment,
`imageType` int(11) NOT NULL COMMENT 'used to tell if its for an artist, header image, etc.',
`parentObjectID` int(11) NOT NULL COMMENT 'used to tell what island/resort the image applies to',
`imageLocation` text NOT NULL,
`largeImageLocation` text NOT NULL,
`imageLinkLabel` text NOT NULL,
`imageURL` text NOT NULL,
PRIMARY KEY (`imageID`)
)
Island Structure:
CREATE TABLE `island` (
`islandID` int(11) NOT NULL auto_increment,
`islandName` text NOT NULL,
`shortDesc` text NOT NULL,
`longDesc` text NOT NULL,
`getTo` text NOT NULL,
`getAround` text NOT NULL,
`photoInfo` text NOT NULL,
`flowerInfo` text NOT NULL,
`musicInfo` text NOT NULL,
`cakeInfo` text NOT NULL,
`activityInfo` text NOT NULL,
`wedCoord` text NOT NULL,
`regs` text NOT NULL,
`climate` text NOT NULL,
`languageID` int(11) NOT NULL,
`currencyID` int(11) NOT NULL,
`wideAccept` int(11) NOT NULL,
`passportReq` int(11) NOT NULL,
`picture` text NOT NULL,
`daysSearchable` int(11) NOT NULL,
`active` tinyint(1) NOT NULL,
PRIMARY KEY (`islandID`)
)
Resort Structure:
CREATE TABLE `resort` (
`resortID` int(11) NOT NULL auto_increment,
`resortName` text NOT NULL,
`parentIslandID` int(11) NOT NULL,
`longDesc` text NOT NULL,
`website` text NOT NULL,
`genBooking` text NOT NULL,
`eventCoord` text NOT NULL,
`amenInfo` text NOT NULL,
`roomInfo` text NOT NULL,
`coordInfo` text NOT NULL,
`localeInfo` text NOT NULL,
`spaInfo` text NOT NULL,
`roomPrice` text NOT NULL,
`maxGuests` text NOT NULL,
`picture` text NOT NULL,
`search_Inclusive` int(11) NOT NULL,
`search_resortType` int(11) NOT NULL,
`search_onBeach` int(11) NOT NULL,
`search_wedCoord` int(11) NOT NULL,
`search_roomRate` int(11) NOT NULL,
`search_airportDist` int(11) NOT NULL,
`search_HotelSuite` tinyint(1) NOT NULL,
`search_VillaCondo` tinyint(1) NOT NULL,
`search_Amenities` text NOT NULL,
`active` tinyint(1) NOT NULL,
PRIMARY KEY (`resortID`)
)
You are mixing two different types of JOIN
syntax - the implicit type where tables are listed in FROM
, and the explicit JOIN
type. Instead, try:
SELECT
islandID AS parentIslandID,
islandName,
island.longDesc,
imageLocation,
COUNT(r1.resortID) AS totalResorts,
r1.resortID
FROM island
JOIN resort r1 ON island.islandID = r1.parentIslandID
JOIN images ON island.islandID = images.parentObjectID
WHERE
r1.resortID IN (
59,62,65,69,71,72,74,75,76,82,86,89,91,93,95,105,
106,116,117,118,120,121,122,123,124,125,126,127,
131,145,146,150,157,159,160,167,170,174,176,185,188,189,193,
194,198,199,200,203,205,213,217
)
AND resort.active = '-1'
GROUP BY r1.parentIslandID
ORDER BY totalResorts DESC
**Edited to include island JOIN
after table structure was posted.
Additionally:
- MySQL uses
AND
rather than&&
for boolean AND - Table aliases do not need the
AS
keyword (JOIN resort r1
) - Be sure to use your
resort
aliasr1
in the select list (r1.resortID
)
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