MySQL没有从我的选择查询中返回任何结果

时间：2015-05-29 00:37:57

标签： mysql select

我有以下多个字段，我想显示我的费用和收入的陈述。我正在进行查询以从MySQL查询返回description, credit, debit and balance。 SQL Fiddle 

CREATE TABLE IF NOT EXISTS `trans` (
`ID` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
`debit` decimal(15,4) NOT NULL,
`credit` decimal(15,4) NOT NULL,
`catid` smallint(5) NOT NULL,
`incomeid` bigint(20) unsigned NOT NULL DEFAULT '0',
`expenseid` bigint(20) unsigned NOT NULL DEFAULT '0',
`bankid` int(3) unsigned NOT NULL,
`date` date NOT NULL,
`updated_last` datetime NOT NULL,
PRIMARY KEY (`ID`)
) ENGINE=InnoDB  DEFAULT CHARSET=utf8 AUTO_INCREMENT=11 ;

--
-- Dumping data for table `trans`
--

INSERT INTO `trans` (`ID`, `debit`, `credit`, `catid`, `incomeid`, `expenseid`, `bankid`, `date`, `updated_last`) VALUES
(1, 0.0000, 2078.1000, 23, 1, 0, 2, '2015-04-01', '2015-04-30 14:16:37'),
(2, 0.0000, 2052.8200, 23, 2, 0, 2, '2015-04-02', '2015-04-30 14:17:23'),
(3, 0.0000, 4906.6200, 23, 3, 0, 2, '2015-04-02', '2015-04-30 14:17:06'),
(4, 0.0000, 12360.0500, 23, 4, 0, 1, '2015-04-02', '2015-04-30 12:18:15'),
(5, 0.0000, 10750.0000, 23, 5, 0, 2, '2015-04-03', '2015-04-30 12:25:31'),
(6, 0.0000, 2247.2000, 23, 6, 0, 1, '2015-04-03', '2015-04-30 12:29:45'),
(7, 0.0000, 4775.3000, 23, 7, 0, 2, '2015-04-04', '2015-04-30 12:37:40'),
(8, 0.0000, 2052.8200, 23, 8, 0, 2, '2015-04-04', '2015-04-30 14:16:05'),
(9, 2280.9100, 2280.9100, 23, 0, 1, 2, '2015-04-06', '2015-04-30 14:17:51'),
(10, 0.0000, 25000.0000, 23, 0, 2, 2, '2015-04-04', '2015-04-30 13:46:03');

CREATE TABLE IF NOT EXISTS `expense` (
`id` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
`type` int(11) unsigned NOT NULL,
`date` date NOT NULL,
`itemdesc` varchar(255) NOT NULL,
`quantity` varchar(30) NOT NULL,
`price` decimal(15,4) NOT NULL,
`grandtotal` decimal(15,4) NOT NULL,
`updated_last` datetime NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB  DEFAULT CHARSET=utf8 AUTO_INCREMENT=11 ;

--
-- Dumping data for table `expense`
--

INSERT INTO `expense` (`id`, `type`, `date`, `itemdesc`, `quantity`, `price`, `grandtotal`, `updated_last`) VALUES
(1, 30, '2015-04-04', 'INT-CITY CASH DEP CHG INC ST-EC 300315', '1', 50.0000, 56.1800, '2015-05-01 02:35:37'),
(2, 30, '2015-04-04', 'IMPS P2P 562 508513121760#26-03- 300315', '1', 5.0000, 5.6200, '2015-05-01 02:37:18'),
(3, 29, '2015-04-08', 'mobile 1 Bill', '1', 599.0000, 673.0400, '2015-05-01 02:47:01'),
(4, 29, '2015-04-08', 'mobile 2 Bill Mar 2015', '1', 627.0000, 704.5000, '2015-05-01 02:58:08'),
(5, 38, '2015-04-10', 'staff 1 Salary Mar 2015', '1', 22000.0000, 22000.0000, '2015-05-01 03:02:21'),
(6, 38, '2015-04-10', 'staff 2 Salary Mar 2015', '1', 22000.0000, 22000.0000, '2015-05-01 03:03:40'),
(7, 29, '2015-04-11', 'landline 2 March 2015', '1', 388.9000, 436.9700, '2015-05-01 04:13:24'),
(8, 29, '2015-04-11', 'landline Mar 2015', '1', 605.2300, 680.0400, '2015-05-01 04:20:52'),
(9, 29, '2015-04-11', 'pager bill Mar 2015', '1', 591.4000, 664.5000, '2015-05-01 04:23:28'),
(10, 29, '2015-04-11', 'phone bill Mar 2015', '1', 198.7500, 223.3200, '2015-05-01 04:26:01');


CREATE TABLE IF NOT EXISTS `items` (
`id` int(11) unsigned NOT NULL AUTO_INCREMENT,
`description` varchar(200) NOT NULL,
`catid` int(5) unsigned NOT NULL,
`status` tinyint(1) NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB  DEFAULT CHARSET=utf8 AUTO_INCREMENT=11 ;

--
-- Dumping data for table `items`
--

INSERT INTO `items` (`id`, `description`, `catid`, `status`) VALUES
(1, 'product 10000', 23, 1),
(2, 'product 50000', 23, 1),
(3, 'product 100000', 23, 1),
(4, 'product 500000', 23, 1),
(5, 'product High 10000', 23, 1),
(6, 'product High 50000', 23, 1),
(7, 'product High 100000', 23, 1),
(8, 'product High 500000', 23, 1),
(9, 'product Normal 10000', 23, 1),
(10, 'product Normal 25000', 23, 1);

CREATE TABLE IF NOT EXISTS `income` (
`id` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
`type` smallint(5) unsigned NOT NULL,
`date` date NOT NULL,
`itemdesc` int(11) unsigned NOT NULL DEFAULT '0',
`quantity` varchar(30) NOT NULL,
`price` decimal(15,4) NOT NULL,
`grandtotal` decimal(15,4) NOT NULL,
`updated_last` datetime NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB  DEFAULT CHARSET=utf8 AUTO_INCREMENT=11 ;

--
-- Dumping data for table `income`
--

INSERT INTO `income` (`id`, `type`, `date`, `itemdesc`, `quantity`, `price`, `grandtotal`, `updated_last`) VALUES
(1, 23, '2015-04-01', 18, '10000', 0.1800, 2078.1000, '2015-04-30 14:16:37'),
(2, 23, '2015-04-02', 18, '10000', 0.1800, 2052.8200, '2015-04-30 14:17:23'),
(3, 23, '2015-04-02', 10, '25000', 0.1700, 4906.6200, '2015-04-30 14:17:06'),
(4, 23, '2015-04-02', 12, '100000', 0.1100, 12360.0500, '2015-04-30 12:18:15'),
(5, 23, '2015-04-03', 12, '100000', 0.1075, 10750.0000, '2015-04-30 12:25:31'),
(6, 23, '2015-04-03', 14, '10000', 0.2000, 2247.2000, '2015-04-30 12:29:45'),
(7, 23, '2015-04-04', 10, '25000', 0.1700, 4775.3000, '2015-04-30 12:37:40'),
(8, 23, '2015-04-04', 9, '10000', 0.1800, 2052.8200, '2015-04-30 14:16:05'),
(9, 23, '2015-04-06', 14, '10000', 0.2000, 2280.9100, '2015-04-30 14:17:51'),
(10, 23, '2015-04-04', 53, '250000', 0.1000, 25000.0000, '2015-04-30 13:46:03');

MySQL查询：

set @depos=0;
set @total=0;
SELECT A.`date` , A.`debit` , A.`credit` , 
if( A.`credit` >0, @depos := A.`credit`, @depos := @depos + A.`credit` - A.`debit` ) AS depos_bal, 
@total := @total + A.`credit` - A.`debit` AS net_bal, C.`itemdesc`, D.`description` 
FROM `trans` A, `income` B, `expense` C, `items` D 
WHERE A.`expenseid` = C.`id` 
AND A.`incomeid` = B.`id` 
AND B.`itemdesc` = D.`id` 
AND A.`bankid` = '2'
ORDER BY A.`date` ASC, A.`ID` ASC

我的几个问题不足以完成它。

如何使用查询获取如下所有行？

Date         Description    Debit      Credit         Balance
04-04-2015   Item 1                     4,775.30      27,445.28
04-04-2015   Item 2         56.18       27,389.10
07-04-2015   Item 3                      2,359.56     29,743.04

1 个答案:

答案 0 :(得分：1)

您的trans，income和expense表之间没有匹配的值。所以通过ANDing“其中A.expenseid = C.id AND A.incomeid = B.”不会产生任何结果。

如果您运行这些查询，您将意识到：

从trans选择*来自A income = B incomeid的内部联接id B。

从trans选择*来自A expense = C的内部联接expenseid C. id;

而不是ANDing你应该在桌子上加入：

SELECT A.`date` , D.`description`, C.`itemdesc`, A.`debit` , A.`credit`, 
if( A.`credit` > 0, @depos := A.`credit`, @depos := @depos + A.`credit` - A.`debit` ) AS depos_bal, 
@total := @total + A.`credit` - A.`debit` AS net_bal
FROM `trans` A left join `income` B ON A.`incomeid` = B.`id` left join `expense` C on A.`expenseid` = C.`id` left join `items` D ON B.`itemdesc` = D.`id`
WHERE A.`bankid` = '2'
ORDER BY A.`date` ASC, A.`ID` ASc;
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