MySQL的未知列（在表）

inventory_items：

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查詢：

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

，我得到了以下錯誤：

[Err] 1054 - Unknown column 'inventory_items.item_model_id' in 'on clause'

此列已存在... :(

來源

2013-05-14 Michael Grenzer

你不加入inventory_items的桌子上休息。您在FROM子句中的inventory_items之後需要加入語句。不知道它會解決問題，但它是一個開始。 – Robbert

簡答：你的混合連接類型。使用Inner join或,表示法，而不是兩者。原因：編譯器嘗試在生成,類型聯接中可能較大的笛卡爾之前先完成內部聯接語句。因此，在嘗試加入時，它不知道有關的價值。如果你確實是指交叉加入狀態，那麼問題就應該消失。

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

來源

2013-05-14 20:12:06 xQbert

（headbang）謝謝。現在工作.. –

MySQL的未知列（在表）

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