'select sum'在一个表中不起作用

时间：2015-10-08 19:40:39

标签： mysql

我有两张桌子：

*-- Struttura della tabella `confmiele`
--
CREATE TABLE IF NOT EXISTS `confmiele` (
  `idconf` int(11) NOT NULL,
  `dataconfmiele` date NOT NULL,
  `codconfmiele` varchar(10) NOT NULL,
  `nomeconfmiele` varchar(20) NOT NULL,
  `boxconfmiele` varchar(20) NOT NULL,
  `pesoconfmiele` int(7) NOT NULL,
  `numconfmiele` int(7) NOT NULL,
  `totconfmiele` int(7) NOT NULL,
  `noteconfmiele` varchar(300) NOT NULL
) ENGINE=InnoDB AUTO_INCREMENT=15 DEFAULT CHARSET=utf8;
--
-- Dump dei dati per la tabella `confmiele`
--
INSERT INTO `confmiele` (`idconf`, `dataconfmiele`, `codconfmiele`, `nomeconfmiele`, `boxconfmiele`, `pesoconfmiele`, `numconfmiele`, `totconfmiele`, `noteconfmiele`) VALUES
(2, '2015-09-02', 'GPO15SET', 'GIPPOMIELE', 'VASO VETRO 1000', 1000, 1, 1000, ''),
(4, '2015-09-02', 'GPO15SET', 'GIPPOMIELE', 'VASO VETRO 1000', 1000, 1, 1000, ''),
(5, '2015-09-02', 'GP15SET', 'GIPPOMIELE', 'VASO VETRO 1000', 1000, 10, 10000, ''),
(6, '2015-09-03', 'GP15SET', 'GIPPOMIELE', 'VASO VETRO 1000', 1000, 1, 1000, ''),
(7, '2015-10-07', 'GP15SET', 'GIPPOMIELE', 'VASO VETRO 1000', 1000, 10, 10000, ''),
(8, '2015-10-07', 'GP15SET', 'GIPPOMIELE', 'VASO VETRO 1000', 1000, 10, 10000, ''),
(9, '2015-10-08', 'GP15SET', 'GIPPOMIELE', 'VASO VETRO 1000', 1000, 1, 1000, ''),
(10, '2015-10-08', 'GP15SET', 'GIPPOMIELE', 'VASO VETRO 1000', 1000, 1, 1000, ''),
(11, '2015-10-08', 'GP15SET', 'GIPPOMIELE', 'VASO VETRO 1000', 1000, 1, 1000, ''),
(12, '2015-10-08', 'GP15SET', 'GIPPOMIELE', 'VASO VETRO 1000', 1000, 1, 1000, ''),
(13, '2015-10-08', 'GP15SET', 'GIPPOMIELE', 'VASO VETRO 1000', 1000, 1, 1000, ''),
(14, '2015-10-08', 'GP15SET', 'GIPPOMIELE', 'VASO VETRO 1000', 1000, 1, 1000, '');
--
-- Indici per le tabelle scaricate
--
--
-- Indici per le tabelle `confmiele`
--
ALTER TABLE `confmiele`
  ADD PRIMARY KEY (`idconf`);
--
-- AUTO_INCREMENT per le tabelle scaricate
--
--
-- AUTO_INCREMENT per la tabella `confmiele`
--
ALTER TABLE `confmiele`
  MODIFY `idconf` int(11) NOT NULL AUTO_INCREMENT,AUTO_INCREMENT=15;
/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;*

select sum在此表中有效：

*SELECT SUM(numconfmiele) FROM confmiele WHERE codconfmiele = 'GP15SET' AND boxconfmiele = 'VASO VETRO 1000'*

但是，在第二个表格中：

--
-- Struttura della tabella `dettconffattmiele`
--

CREATE TABLE IF NOT EXISTS `dettconffattmiele` (
  `iddettconffatt` int(11) NOT NULL,
  `dataconffattmiele` date NOT NULL,
  `idfatt` int(11) NOT NULL,
  `codconffattmiele` varchar(10) NOT NULL,
  `nomeconffattmiele` varchar(20) NOT NULL,
  `boxfattmiele` varchar(20) NOT NULL,
  `numconffattmiele` int(7) NOT NULL,
  `totpesoconffattmiele` int(7) NOT NULL,
  `uniteurofattmiele` decimal(7,2) NOT NULL,
  `eurofattmiele` decimal(7,2) NOT NULL
) ENGINE=InnoDB AUTO_INCREMENT=24 DEFAULT CHARSET=utf8;

--
-- Dump dei dati per la tabella `dettconffattmiele`
--

INSERT INTO `dettconffattmiele` (`iddettconffatt`, `dataconffattmiele`, `idfatt`, `codconffattmiele`, `nomeconffattmiele`, `boxfattmiele`, `numconffattmiele`, `totpesoconffattmiele`, `uniteurofattmiele`, `eurofattmiele`) VALUES
(1, '2015-09-02', 10, ' GP15SET', ' GIPPOMIELE', 'VASO VETRO 1000', 5, 5000, '10.00', '50.00'),
(2, '2015-09-02', 11, ' GP15SET', ' GIPPOMIELE', ' VASO VETRO 1000', 5, 5000, '10.00', '50.00'),
(3, '2015-09-02', 12, ' GP15SET', ' GIPPOMIELE', ' VASO VETRO 1000', 5, 5000, '10.00', '50.00'),
(6, '2015-09-03', 19, ' GP15SET', ' GIPPOMIELE', ' VASO VETRO 1000', 1, 1000, '1.00', '1.00'),
(7, '2015-09-03', 20, ' GP15SET', ' GIPPOMIELE', ' VASO VETRO 1000', 1, 1000, '1.00', '1.00'),
(8, '2015-09-03', 21, ' GP15SET', ' GIPPOMIELE', ' VASO VETRO 1000', 1, 1000, '1.00', '1.00'),
(9, '2015-09-03', 22, ' GP15SET', ' GIPPOMIELE', ' VASO VETRO 1000', 1, 1000, '1.00', '1.00'),
(10, '2015-09-03', 23, ' GP15SET', ' GIPPOMIELE', ' VASO VETRO 1000', 1, 1000, '1.00', '1.00'),
(11, '2015-09-03', 24, ' GP15SET', ' GIPPOMIELE', ' VASO VETRO 1000', 1, 1000, '1.00', '1.00'),
(12, '2015-09-03', 25, ' GP15SET', ' GIPPOMIELE', ' VASO VETRO 1000', 1, 1000, '1.00', '1.00'),
(13, '2015-09-03', 26, ' GP15SET', ' GIPPOMIELE', ' VASO VETRO 1000', 1, 1000, '1.00', '1.00'),
(14, '2015-09-03', 27, ' GP15SET', ' GIPPOMIELE', ' VASO VETRO 1000', 1, 1000, '1.00', '1.00'),
(15, '2015-09-03', 28, ' GP15SET', ' GIPPOMIELE', ' VASO VETRO 1000', 1, 1000, '1.00', '1.00'),
(16, '2015-09-03', 29, ' GP15SET', ' GIPPOMIELE', ' VASO VETRO 1000', 1, 1000, '1.00', '1.00'),
(17, '2015-09-03', 30, ' GP15SET', ' GIPPOMIELE', ' VASO VETRO 1000', 1, 1000, '1.00', '1.00'),
(18, '2015-09-03', 31, ' GP15SET', ' GIPPOMIELE', ' VASO VETRO 1000', 1, 1000, '1.00', '1.00'),
(19, '2015-09-03', 32, ' GP15SET', ' GIPPOMIELE', ' VASO VETRO 1000', 1, 1000, '1.00', '1.00'),
(20, '2015-09-03', 33, ' GP15SET', ' GIPPOMIELE', ' VASO VETRO 1000', 1, 1000, '1.00', '1.00'),
(21, '2015-09-03', 34, ' GP15SET', ' GIPPOMIELE', ' VASO VETRO 1000', 1, 1000, '1.00', '1.00'),
(22, '2015-09-03', 35, ' GP15SET', ' GIPPOMIELE', ' VASO VETRO 1000', 1, 1000, '1.00', '1.00'),
(23, '2015-09-03', 36, ' GP15SET', ' GIPPOMIELE', ' VASO VETRO 1000', 1, 1000, '1.00', '1.00');

--
-- Indici per le tabelle scaricate
--

--
-- Indici per le tabelle `dettconffattmiele`
--
ALTER TABLE `dettconffattmiele`
  ADD PRIMARY KEY (`iddettconffatt`);

--
-- AUTO_INCREMENT per le tabelle scaricate
--

--
-- AUTO_INCREMENT per la tabella `dettconffattmiele`
--
ALTER TABLE `dettconffattmiele`
  MODIFY `iddettconffatt` int(11) NOT NULL AUTO_INCREMENT,AUTO_INCREMENT=24;
/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;

相同的select sum不起作用：

SELECT SUM(numconffattmiele) FROM dettconffattmiele WHERE codconffattmiele = 'GP15SET' AND  boxfattmiele =  'VASO VETRO 1000'

我真的不明白。为什么？ 代码是相同的，我在一台服务器上工作。

服务器：通过UNIX套接字的本地主机
Tipo di服务器：MySQL
Versione del server：5.5.31-log - 来源分发
版本协议：10
Utente：root @ localhost
Codifica caratteri del server：UTF-8 Unicode（utf8）

Apache / 2.2.12（Linux / SUSE）
Versione del client del database：libmysql - mysqlnd 5.0.8-dev - 20102224 - $ Id：65fe78e70ce53d27a6cd578597722950e490b0d0 $
Estensione PHP：mysqli Documentazione
版本PHP：5.3.17
phpMyAdmin的

Informazioni sulla versione：4.4.4

3 个答案:

答案 0 :(得分：0)

您有, ' GP15SET',个数据空间。

但在您的查询WHERE codconffattmiele = 'GP15SET' ...

中

但'GP15SET'不等于'GP15SET'

http://sqlfiddle.com/#!9/7bd3a5/3

我猜你对'VASO VETRO 1000' vs ' VASO VETRO 1000'

的期望相同

答案 1 :(得分：0)

插入时出错

在某一行中

  'VASO VETRO 1000',

在其他你有

   ' VASO VETRO 1000',

你在场地的开头有一个额外的空间，那么你的地方无法工作......

答案 2 :(得分：0)

将您的查询更改为此

SELECT SUM(numconffattmiele) 
FROM dettconffattmiele 
WHERE TRIM(codconffattmiele) = 'GP15SET' 
 AND  TRIM(boxfattmiele) = 'VASO VETRO 1000';

问题是你的字段中有一些额外的空格并且它们没有正确匹配

FIDDLE EXAMPLE

看起来你在字符串中放了一个空格......又名。 

value=' $cod16conffattmiele'
-------^-------------------- extra space there

您需要删除该空格value='$cod16conffattmiele'

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