MySQL未知列(在表中)
我的表格结构: 库存物品:MySQL未知列(在表中),mysql,Mysql,我的表格结构: 库存物品: CREATE TABLE `inventory_items` ( `id` int(10) unsigned NOT NULL AUTO_INCREMENT, `name` varchar(50) DEFAULT NULL COMMENT 'Usually used as invoice number', `vendor_id` int(10) NOT NULL DEFAULT '1', `item_type_id` int(10) unsigned DEFA
CREATE TABLE `inventory_items` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`name` varchar(50) DEFAULT NULL COMMENT 'Usually used as invoice number',
`vendor_id` int(10) NOT NULL DEFAULT '1',
`item_type_id` int(10) unsigned DEFAULT NULL,
`item_model_id` int(10) unsigned DEFAULT NULL,
`condition_id` int(10) unsigned DEFAULT NULL,
`item_functionality_id` int(10) unsigned DEFAULT NULL,
`color_id` int(10) unsigned DEFAULT NULL,
`quantity` int(10) unsigned DEFAULT NULL,
`original_qty` int(10) DEFAULT NULL,
`note` text,
`zone_id` int(10) unsigned DEFAULT NULL,
`rack_id` int(10) unsigned DEFAULT NULL,
`shelf_id` int(10) unsigned DEFAULT NULL,
`bin_id` int(10) unsigned DEFAULT NULL,
`status` char(1) DEFAULT NULL COMMENT '1:CheckedIn;2:Transferred',
`reserve` tinyint(1) NOT NULL DEFAULT '0',
`log` text,
`user_id` int(10) unsigned DEFAULT NULL,
`created` datetime DEFAULT NULL,
`modified` datetime DEFAULT NULL,
`item_manu_model_id` int(11) NOT NULL DEFAULT '0',
`cdma_carrier_id` int(11) DEFAULT '0',
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=45334 DEFAULT CHARSET=latin1
我的SQL查询:
SELECT inventory_items.id,
conditions.`name`,
item_models.`name`
FROM inventory_items,
sorting_reports
INNER JOIN item_models
ON inventory_items.item_model_id = item_models.id
INNER JOIN conditions
ON inventory_items.condition_id = conditions.id
WHERE inventory_items.item_model_id = 1111
AND inventory_items.condition_id = 10
AND inventory_items.id = 20
AND ( ( inventory_items.zone_id = 21 )
OR ( inventory_items.rack_id = 175 ) )
AND sorting_reports.id != 0
我得到以下错误:
[Err] 1054 - Unknown column 'inventory_items.item_model_id' in 'on clause'
该列已存在….:(简短回答:您的混合联接类型。使用
内部联接
或,
表示法,而不是两者都使用。
原因:编译器在,
类型join上生成可能较大的笛卡尔函数之前,会先尝试完成内部join语句。因此,在尝试连接时,它不知道所讨论的值。如果您真正的意思是交叉连接,那么问题应该消失
有关这方面的更多信息,请参见:
您没有将inventory\u项联接到其他表。您可能需要在FROM子句中的inventory\u项之后使用join语句。不确定这是否会解决问题,但这只是一个开始。
SELECT inventory_items.id,
conditions.`name`,
item_models.`name`
FROM inventory_items
CROSS JOIN sorting_reports
INNER JOIN item_models
ON inventory_items.item_model_id = item_models.id
INNER JOIN conditions
ON inventory_items.condition_id = conditions.id
WHERE inventory_items.item_model_id = 1111
AND inventory_items.condition_id = 10
AND inventory_items.id = 20
AND ( ( inventory_items.zone_id = 21 )
OR ( inventory_items.rack_id = 175 ) )
AND sorting_reports.id != 0