patternsqlMinor
Problem joining two tables in MySQL
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problemtablestwomysqljoining
Problem
I'm new to MySQL. I'm having trouble in joining two tables:
Table resources in room:
Table resource:
SELECT e.resourceName
FROM resources_in_room r
JOIN resource e ON r.resourceId=e.resourceId WHERE r.roomId=2;Table resources in room:
CREATE TABLE ``resources_in_room` (
`id` bigint(20) NOT NULL auto_increment,
`Quantity` int(11) default NULL,
`resourseId` int(11) default NULL,
`roomId` int(11) default NULL,
PRIMARY KEY (`id`),
UNIQUE KEY `resourseId` (`resourseId`,`roomId`),
KEY `FK36360B9B821B4697` (`roomId`),
KEY `FK36360B9BC0C935AD` (`resourseId`),
CONSTRAINT `FK36360B9BC0C935AD`
FOREIGN KEY (`resourseId`) REFERENCES `resource` (`ResourceId`),
CONSTRAINT `FK36360B9B821B4697`
FOREIGN KEY (`roomId`) REFERENCES `room` (`RoomId`)
)Table resource:
CREATE TABLE `resource` (
`ResourceId` int(11) NOT NULL auto_increment,
`Description` varchar(255) default NULL,
`Quantity` int(11) default NULL,
`ResourceName` varchar(255) default NULL,
PRIMARY KEY (`ResourceId`)
)Solution
its
This will work
resourseId in your table definition and you are using resourceId in query. This will work
SELECT e.resourceName FROM resources_in_room r join resource e on r.resourseId = e.resourceId where r.roomId=2;Code Snippets
SELECT e.resourceName FROM resources_in_room r join resource e on r.resourseId = e.resourceId where r.roomId=2;Context
StackExchange Database Administrators Q#22265, answer score: 4
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