MYSQL語法錯誤 - 爲什麼會發生這種情況？

Question

我在我的PHP腳本中使用MySQL超過6年，但我從未遇到像這樣的錯誤。

當我執行SQL命令：

SELECT `discount_items`.* FROM `discount_items` WHERE (position=1) AND (active=1) AND (end<=1344007212) AND (show=1) LIMIT 1 

它拋出我這個錯誤

#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'show=1) LIMIT 1' at line 1 

表結構是：

CREATE TABLE IF NOT EXISTS `discount_items` (
    `id` int(11) NOT NULL AUTO_INCREMENT, 
    `name` text CHARACTER SET utf8 COLLATE utf8_czech_ci NOT NULL, 
    `image` text CHARACTER SET utf8 COLLATE utf8_czech_ci NOT NULL, 
    `discount` float NOT NULL, 
    `price1` float NOT NULL, 
    `price2` float NOT NULL, 
    `bought` int(11) NOT NULL, 
    `target` int(11) NOT NULL, 
    `desc` text CHARACTER SET utf8 COLLATE utf8_czech_ci NOT NULL, 
    `link` text CHARACTER SET utf8 COLLATE utf8_czech_ci NOT NULL, 
    `active` tinyint(1) NOT NULL, 
    `start` int(11) NOT NULL, 
    `end` int(11) NOT NULL, 
    `position` int(11) NOT NULL DEFAULT '1', 
    `show` int(11) NOT NULL DEFAULT '1', 
    PRIMARY KEY (`id`) 
) ENGINE=InnoDB DEFAULT CHARSET=latin1; 

我不明白什麼是錯。顯然，「秀」場引起的問題，但我已經嘗試了一切。（一定有什麼毛病秀場，因爲：

SELECT `discount_items`.* FROM `discount_items` WHERE (show=1) AND (active=1) AND (end<=1344007212) AND (position=1) LIMIT 1 

拋出

#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'show=1) AND (active=1) AND (end<=1344007212) AND (position=1) LIMIT 1' at line 1 

所以，問題與秀場移動。

我很抱歉，如果這是常見的問題，但我用Google搜索並沒有發現這個錯誤太全局和沒有解釋任何東西給我。

感謝任何他lp和提示！

Answer 1

show是保留字。請將其更改或將其放置在刻度中

SELECT `discount_items`.* FROM `discount_items` WHERE (position=1) AND (active=1) AND (end<=1344007212) AND (`show`=1) LIMIT 1 

Answer 2

show是MySQL保留字。如果你想用它來引用一個字段名稱，則必須將其反引號是這樣的：

SELECT `discount_items`.* 
FROM `discount_items` 
WHERE 
    (position=1) 
    AND (active=1) 
    AND (end<=1344007212) 
    AND (`show`=1) /* backticks added here */ 
LIMIT 1 

Answer 3

show是一個MySQL的保留字。用反引號將它括起來使其起作用。