搜索
首页数据库mysql教程Mysql,Oracle使用rollup函数完成队列统计

Mysql,Oracle使用rollup函数完成队列统计

WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB
WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB
Jun 07, 2016 pm 04:24 PM
mysqloraclerollup使用函数完成

Mysql,Oracle使用rollup函数完成行列统计 ??? 昨天突然在 一篇博客中看到了Mysql也有rollup函数，原博文使用了rollup进行行列统计，原博文链接如下： ??? http://www.cnblogs.com/lhj588/archive/2012/06/15/2550392.html ??? 本博文主要是记录下mysql和oracl

Mysql,Oracle使用rollup函数完成行列统计

??? 昨天突然在一篇博客中看到了Mysql也有rollup函数，原博文使用了rollup进行行列统计，原博文链接如下：

??? http://www.cnblogs.com/lhj588/archive/2012/06/15/2550392.html

??? 本博文主要是记录下mysql和oracle使用rollup函数进行行列统计，内容比较简单。

??? 首先是mysql，建表测试：

??? 

CREATE TABLE `tmysql_test_hanglietongji` (
  `id` int(11) NOT NULL,
  `c1` char(2) COLLATE utf8_bin DEFAULT NULL,
  `c2` char(2) COLLATE utf8_bin DEFAULT NULL,
  `c3` int(11) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin

???

INSERT INTO `tmysql_test_hanglietongji` VALUES (1, 'A1', 'B1', 9);
INSERT INTO `tmysql_test_hanglietongji` VALUES (2, 'A2', 'B1', 7);
INSERT INTO `tmysql_test_hanglietongji` VALUES (3, 'A3', 'B1', 4);
INSERT INTO `tmysql_test_hanglietongji` VALUES (4, 'A4', 'B1', 2);
INSERT INTO `tmysql_test_hanglietongji` VALUES (5, 'A1', 'B2', 2);
INSERT INTO `tmysql_test_hanglietongji` VALUES (6, 'A2', 'B2', 9);
INSERT INTO `tmysql_test_hanglietongji` VALUES (7, 'A3', 'B2', 8);
INSERT INTO `tmysql_test_hanglietongji` VALUES (8, 'A4', 'B2', 5);
INSERT INTO `tmysql_test_hanglietongji` VALUES (9, 'A1', 'B3', 1);
INSERT INTO `tmysql_test_hanglietongji` VALUES (10, 'A2', 'B3', 8);
INSERT INTO `tmysql_test_hanglietongji` VALUES (11, 'A3', 'B3', 8);
INSERT INTO `tmysql_test_hanglietongji` VALUES (12, 'A4', 'B3', 6);
INSERT INTO `tmysql_test_hanglietongji` VALUES (13, 'A1', 'B4', 8);
INSERT INTO `tmysql_test_hanglietongji` VALUES (14, 'A2', 'B4', 2);
INSERT INTO `tmysql_test_hanglietongji` VALUES (15, 'A3', 'B4', 6);
INSERT INTO `tmysql_test_hanglietongji` VALUES (16, 'A4', 'B4', 9);
INSERT INTO `tmysql_test_hanglietongji` VALUES (17, 'A1', 'B4', 3);
INSERT INTO `tmysql_test_hanglietongji` VALUES (18, 'A2', 'B4', 5);
INSERT INTO `tmysql_test_hanglietongji` VALUES (19, 'A3', 'B4', 2);
INSERT INTO `tmysql_test_hanglietongji` VALUES (20, 'A4', 'B4', 5);

?? 要完成的效果如下：

???

????? 最简单的是使用union,如下：

????? 

select ifnull(c1, 'total') as 'total',
       sum(if(c2 = 'B1', C3, 0)) AS B1,
       sum(if(c2 = 'B2', C3, 0)) AS B2,
       sum(if(c2 = 'B3', C3, 0)) AS B3,
       sum(if(c2 = 'B4', C3, 0)) AS B4,
       SUM(C3) AS TOTAL
  from tmysql_test_hanglietongji
 group by C1 
union 
select 'total' as 'total',
       sum(if(c2 = 'B1', C3, 0)) AS B1,
       sum(if(c2 = 'B2', C3, 0)) AS B2,
       sum(if(c2 = 'B3', C3, 0)) AS B3,
       sum(if(c2 = 'B4', C3, 0)) AS B4,
       SUM(C3) AS TOTAL
  from tmysql_test_hanglietongji
 order by 1

??? 也可以使用with rollup函数。注意当使用 rollup时, 你不能同时使用 order by子句进行结果排序

??? 

select ifnull(c1, 'total') 'total',
       sum(if(c2 = 'B1', C3, 0)) AS B1,
       sum(if(c2 = 'B2', C3, 0)) AS B2,
       sum(if(c2 = 'B3', C3, 0)) AS B3,
       sum(if(c2 = 'B4', C3, 0)) AS B4,
       SUM(C3) AS TOTAL
  from tmysql_test_hanglietongji
 group by C1 with rollup;

?? with rollup其实是第一个的简化。

?? 也可以这样写：

???

SELECT IFNULL(c1, 'total') AS total,
       SUM(IF(c2 = 'B1', c3, 0)) AS B1,
       SUM(IF(c2 = 'B2', c3, 0)) AS B2,
       SUM(IF(c2 = 'B3', c3, 0)) AS B3,
       SUM(IF(c2 = 'B4', c3, 0)) AS B4,
       SUM(IF(c2 = 'total', c3, 0)) AS total
  FROM (SELECT c1, IFNULL(c2, 'total') AS c2, SUM(c3) AS c3
          FROM tmysql_test_hanglietongji 
         GROUP BY c1, c2 WITH ROLLUP
        HAVING c1 IS NOT NULL) AS A
 GROUP BY c1 WITH ROLLUP;

??? HAVING c1 IS NOT NULL条件主要是过滤掉对整个tmysql_test_hanglietongji 表求和的那一行，以上面的子查询为例：

??? 

SELECT c1, IFNULL(c2, 'total') AS c2, SUM(c3) AS c3
          FROM tmysql_test_hanglietongji 
         GROUP BY c1, c2 WITH ROLLUP

??? 结果是：

???

?? 相当于：

??

SELECT c1, IFNULL(c2, 'total') AS c2, SUM(c3) AS c3
FROM tmysql_test_hanglietongji 
GROUP BY c1, c2
union ALL
SELECT c1, 'total' AS c2, SUM(c3) AS c3
FROM tmysql_test_hanglietongji 
GROUP BY c1
union ALL
SELECT NULL, 'total' AS c2, SUM(c3) AS c3
FROM tmysql_test_hanglietongji

??? 结果是：

???

??? 可以看出group by c1,c2 with rollup相当于group by c1,c2 union group by c1(c2替换为NULL) union?(c1,c2全部替换为NULL)。

?? 这里的替换规则参考了链接

?? http://blog.itpub.net/519536/viewspace-610995

?? 原文是替换Oracle的rollup，在Mysql中也适用。

?? 使用普通sql写法是：

?? 

SELECT IFNULL(c1, 'total') AS total,
       SUM(IF(c2 = 'B1', c3, 0)) AS B1,
       SUM(IF(c2 = 'B2', c3, 0)) AS B2,
       SUM(IF(c2 = 'B3', c3, 0)) AS B3,
       SUM(IF(c2 = 'B4', c3, 0)) AS B4,
       SUM(IF(c2 = 'total', c3, 0)) AS total
  FROM (SELECT c1, IFNULL(c2, 'total') AS c2, SUM(c3) AS c3
          FROM tmysql_test_hanglietongji
         GROUP BY c1, c2
        HAVING c1 IS NOT NULL
        union
        SELECT c1, 'total' as c2, SUM(c3) AS c3
          FROM tmysql_test_hanglietongji
         group by c1) A
 group by c1
UNION
SELECT 'total' as total,
       SUM(IF(c2 = 'B1', c3, 0)) AS B1,
       SUM(IF(c2 = 'B2', c3, 0)) AS B2,
       SUM(IF(c2 = 'B3', c3, 0)) AS B3,
       SUM(IF(c2 = 'B4', c3, 0)) AS B4,
       SUM(IF(c2 = 'total', c3, 0)) AS total
  FROM (SELECT c1, IFNULL(c2, 'total') AS c2, SUM(c3) AS c3
          FROM tmysql_test_hanglietongji
         GROUP BY c1, c2
        HAVING c1 IS NOT NULL
        union
        SELECT c1, 'total' as c2, SUM(c3) AS c3
          FROM tmysql_test_hanglietongji
         group by c1) A

?? 少了一个是因为上面的having要求c1 is not null,所以替换c1为NULL就没有了。

?

?? 下面看下oracle中怎么写，想要的效果如图：

???

?? 首先建表。

??

create table TSQL_TEST_HANGLIETONGJI
(
  ID NUMBER(4) not null,
  C1 VARCHAR2(2),
  C2 VARCHAR2(2),
  C3 NUMBER(4)
)
;
alter table TSQL_TEST_HANGLIETONGJI
  add primary key (ID);

insert into TSQL_TEST_HANGLIETONGJI (ID, C1, C2, C3)
values (1, 'A1', 'B1', 9);
insert into TSQL_TEST_HANGLIETONGJI (ID, C1, C2, C3)
values (2, 'A2', 'B1', 7);
insert into TSQL_TEST_HANGLIETONGJI (ID, C1, C2, C3)
values (3, 'A3', 'B1', 4);
insert into TSQL_TEST_HANGLIETONGJI (ID, C1, C2, C3)
values (4, 'A4', 'B1', 2);
insert into TSQL_TEST_HANGLIETONGJI (ID, C1, C2, C3)
values (5, 'A1', 'B2', 2);
insert into TSQL_TEST_HANGLIETONGJI (ID, C1, C2, C3)
values (6, 'A2', 'B2', 9);
insert into TSQL_TEST_HANGLIETONGJI (ID, C1, C2, C3)
values (7, 'A3', 'B2', 8);
insert into TSQL_TEST_HANGLIETONGJI (ID, C1, C2, C3)
values (8, 'A4', 'B2', 5);
insert into TSQL_TEST_HANGLIETONGJI (ID, C1, C2, C3)
values (9, 'A1', 'B3', 1);
insert into TSQL_TEST_HANGLIETONGJI (ID, C1, C2, C3)
values (10, 'A2', 'B3', 8);
insert into TSQL_TEST_HANGLIETONGJI (ID, C1, C2, C3)
values (11, 'A3', 'B3', 8);
insert into TSQL_TEST_HANGLIETONGJI (ID, C1, C2, C3)
values (12, 'A4', 'B3', 6);
insert into TSQL_TEST_HANGLIETONGJI (ID, C1, C2, C3)
values (13, 'A1', 'B4', 8);
insert into TSQL_TEST_HANGLIETONGJI (ID, C1, C2, C3)
values (14, 'A2', 'B4', 2);
insert into TSQL_TEST_HANGLIETONGJI (ID, C1, C2, C3)
values (15, 'A3', 'B4', 6);
insert into TSQL_TEST_HANGLIETONGJI (ID, C1, C2, C3)
values (16, 'A4', 'B4', 9);
insert into TSQL_TEST_HANGLIETONGJI (ID, C1, C2, C3)
values (17, 'A1', 'B4', 3);
insert into TSQL_TEST_HANGLIETONGJI (ID, C1, C2, C3)
values (18, 'A2', 'B4', 5);
insert into TSQL_TEST_HANGLIETONGJI (ID, C1, C2, C3)
values (19, 'A3', 'B4', 2);
insert into TSQL_TEST_HANGLIETONGJI (ID, C1, C2, C3)
values (20, 'A4', 'B4', 5);

?? 最简单的写法是：

???

select c1,
       sum(decode(c2,'B1', C3, 0)) AS B1,
       sum(decode(c2 ,'B2', C3, 0)) AS B2,
       sum(decode(c2 ,'B3', C3, 0)) AS B3,
       sum(decode(c2 ,'B4', C3, 0)) AS B4,
       SUM(C3) AS TOTAL
  from tsql_test_hanglietongji
 group by C1
UNION
SELECT 'TOTAL',
       sum(decode(c2 ,'B1', C3, 0)) AS B1,
       sum(decode(c2 ,'B2', C3, 0)) AS B2,
       sum(decode(c2 ,'B3', C3, 0)) AS B3,
       sum(decode(c2 ,'B4', C3, 0)) AS B4,
       SUM(C3)
  FROM tsql_test_hanglietongji

?? 然后使用rollup函数简化。

???

SELECT nvl(c1, 'total') AS total,
       SUM(decode(c2, 'B1', c3, 0)) AS B1,
       SUM(decode(c2, 'B2', c3, 0)) AS B2,
       SUM(decode(c2, 'B3', c3, 0)) AS B3,
       SUM(decode(c2, 'B4', c3, 0)) AS B4,
       sum(c3) AS total
  FROM tsql_test_hanglietongji
 GROUP BY ROLLUP(c1)

???也可以这么写：

??

SELECT nvl(c1, 'total') AS total_c,
       SUM(decode(c2, 'B1', c3, 0)) AS B1,
       SUM(decode(c2, 'B2', c3, 0)) AS B2,
       SUM(decode(c2, 'B3', c3, 0)) AS B3,
       SUM(decode(c2, 'B4', c3, 0)) AS B4,
       SUM(decode(c2, 'total', c3, 0)) AS total_r
  FROM (SELECT c1, nvl(c2, 'total') AS c2, SUM(c3) AS c3
          FROM tsql_test_hanglietongji
         GROUP BY ROLLUP(c1, c2)
        HAVING c1 IS NOT NULL) A
 GROUP BY ROLLUP(c1);

? rollup和普通sql替换上面也说了，举个例子：

?? 

SELECT c1, nvl(c2, 'total') AS c2, SUM(c3) AS c3
          FROM tsql_test_hanglietongji
         GROUP BY ROLLUP(c1, c2)

? 效果是：

??

?? 普通sql写法是：

??

SELECT c1, nvl(c2, 'total') AS c2, SUM(c3) AS c3
  FROM tsql_test_hanglietongji
 GROUP BY c1, c2
union all
SELECT c1, nvl(null, 'total') AS c2, SUM(c3) AS c3
  FROM tsql_test_hanglietongji
 GROUP BY c1
union all
SELECT NULL, 'total' AS c2, SUM(c3) AS c3
  FROM tsql_test_hanglietongji
 order by 1, 2

??? 细心的朋友也许注意到了，第二个union all带了order by 1,2而上面的mysql没有带order by,这和mysql和oracle对NULL的默认排序规则有关。

??? 使用普通sql重写rollup为：

???

SELECT nvl(c1, 'total') AS total_c,
       SUM(decode(c2, 'B1', c3, 0)) AS B1,
       SUM(decode(c2, 'B2', c3, 0)) AS B2,
       SUM(decode(c2, 'B3', c3, 0)) AS B3,
       SUM(decode(c2, 'B4', c3, 0)) AS B4,
       SUM(decode(c2, 'total', c3, 0)) AS total_r
  FROM (SELECT c1, nvl(c2, 'total') AS c2, SUM(c3) AS c3
          FROM tsql_test_hanglietongji
         GROUP BY c1, c2
        HAVING c1 IS NOT NULL
        union all
        SELECT c1, nvl(null, 'total') AS c2, SUM(c3) AS c3
          FROM tsql_test_hanglietongji
         GROUP BY c1
        HAVING c1 IS NOT NULL) A
 GROUP BY c1
union all
SELECT nvl(null, 'total') AS total_c,
       SUM(decode(c2, 'B1', c3, 0)) AS B1,
       SUM(decode(c2, 'B2', c3, 0)) AS B2,
       SUM(decode(c2, 'B3', c3, 0)) AS B3,
       SUM(decode(c2, 'B4', c3, 0)) AS B4,
       SUM(decode(c2, 'total', c3, 0)) AS total_r
  FROM (SELECT c1, nvl(c2, 'total') AS c2, SUM(c3) AS c3
          FROM tsql_test_hanglietongji
         GROUP BY c1, c2
        HAVING c1 IS NOT NULL
        union all
        SELECT c1, nvl(null, 'total') AS c2, SUM(c3) AS c3
          FROM tsql_test_hanglietongji
         GROUP BY c1
        HAVING c1 IS NOT NULL) A
 order by 1

?? 这里也排除了c1 is null的情况。

??? 通过上面的对比，发现oracle和mysql的rollup非常相似，对rollup函数感兴趣的朋友请仔细搜索rollup学习。

??? 到这里该结束了，有任何意见请留言，如文中sql有错误也请指出，谢谢。

??? 全文完。

?

?

??

?

?

?

?

?

???

?

声明
本文内容由网友自发贡献，版权归原作者所有，本站不承担相应法律责任。如您发现有涉嫌抄袭侵权的内容，请联系admin@php.cn
相关文章
MySQL的角色：Web应用程序中的数据库MySQL的角色：Web应用程序中的数据库Apr 17, 2025 am 12:23 AM

MySQL在Web应用中的主要作用是存储和管理数据。1.MySQL高效处理用户信息、产品目录和交易记录等数据。2.通过SQL查询，开发者能从数据库提取信息生成动态内容。3.MySQL基于客户端-服务器模型工作，确保查询速度可接受。

mysql：构建您的第一个数据库mysql：构建您的第一个数据库Apr 17, 2025 am 12:22 AM

构建MySQL数据库的步骤包括：1.创建数据库和表，2.插入数据，3.进行查询。首先，使用CREATEDATABASE和CREATETABLE语句创建数据库和表，然后用INSERTINTO语句插入数据，最后用SELECT语句查询数据。

MySQL：一种对数据存储的初学者友好方法MySQL：一种对数据存储的初学者友好方法Apr 17, 2025 am 12:21 AM

MySQL适合初学者，因为它易用且功能强大。1.MySQL是关系型数据库，使用SQL进行CRUD操作。2.安装简单，需配置root用户密码。3.使用INSERT、UPDATE、DELETE、SELECT进行数据操作。4.复杂查询可使用ORDERBY、WHERE和JOIN。5.调试需检查语法，使用EXPLAIN分析查询。6.优化建议包括使用索引、选择合适数据类型和良好编程习惯。

MySQL初学者友好吗？评估学习曲线MySQL初学者友好吗？评估学习曲线Apr 17, 2025 am 12:19 AM

MySQL适合初学者，因为：1)易于安装和配置，2)有丰富的学习资源，3)SQL语法直观，4)工具支持强大。尽管如此，初学者需克服数据库设计、查询优化、安全管理和数据备份等挑战。

SQL是一种编程语言吗？澄清术语SQL是一种编程语言吗？澄清术语Apr 17, 2025 am 12:17 AM

是的，sqlisaprogramminglanguges pecialized fordatamanage.1）它具有焦点，focusingonwhattoachieveratherthanhow.2）sqlisessential forquerying forquerying，插入，更新，更新，和detletingdatainrelationalDatabases.3）

解释酸的特性（原子，一致性，隔离，耐用性）。解释酸的特性（原子，一致性，隔离，耐用性）。Apr 16, 2025 am 12:20 AM

ACID属性包括原子性、一致性、隔离性和持久性，是数据库设计的基石。1.原子性确保事务要么完全成功，要么完全失败。2.一致性保证数据库在事务前后保持一致状态。3.隔离性确保事务之间互不干扰。4.持久性确保事务提交后数据永久保存。

MySQL：数据库管理系统与编程语言MySQL：数据库管理系统与编程语言Apr 16, 2025 am 12:19 AM

MySQL既是数据库管理系统（DBMS），也与编程语言紧密相关。1）作为DBMS，MySQL用于存储、组织和检索数据，优化索引可提高查询性能。2）通过SQL与编程语言结合，嵌入在如Python中，使用ORM工具如SQLAlchemy可简化操作。3）性能优化包括索引、查询、缓存、分库分表和事务管理。

mySQL：使用SQL命令管理数据mySQL：使用SQL命令管理数据Apr 16, 2025 am 12:19 AM

MySQL使用SQL命令管理数据。1.基本命令包括SELECT、INSERT、UPDATE和DELETE。2.高级用法涉及JOIN、子查询和聚合函数。3.常见错误有语法、逻辑和性能问题。4.优化技巧包括使用索引、避免SELECT*和使用LIMIT。

See all articles

热AI工具

Undresser.AI Undress

Undresser.AI Undress

人工智能驱动的应用程序，用于创建逼真的裸体照片

AI Clothes Remover

AI Clothes Remover

用于从照片中去除衣服的在线人工智能工具。

Undress AI Tool

Undress AI Tool

免费脱衣服图片

Clothoff.io

Clothoff.io

AI脱衣机

AI Hentai Generator

AI Hentai Generator

免费生成ai无尽的。

显示更多

热门文章

R.E.P.O.能量晶体解释及其做什么（黄色晶体）
1 个月前By尊渡假赌尊渡假赌尊渡假赌
R.E.P.O.最佳图形设置
1 个月前By尊渡假赌尊渡假赌尊渡假赌
刺客信条阴影：贝壳谜语解决方案
2 周前ByDDD
R.E.P.O.如果您听不到任何人，如何修复音频
1 个月前By尊渡假赌尊渡假赌尊渡假赌
R.E.P.O.聊天命令以及如何使用它们
1 个月前By尊渡假赌尊渡假赌尊渡假赌
显示更多

热工具

mPDF

mPDF

mPDF是一个PHP库，可以从UTF-8编码的HTML生成PDF文件。原作者Ian Back编写mPDF以从他的网站上“即时”输出PDF文件，并处理不同的语言。与原始脚本如HTML2FPDF相比，它的速度较慢，并且在使用Unicode字体时生成的文件较大，但支持CSS样式等，并进行了大量增强。支持几乎所有语言，包括RTL（阿拉伯语和希伯来语）和CJK（中日韩）。支持嵌套的块级元素（如P、DIV），

安全考试浏览器

安全考试浏览器

Safe Exam Browser是一个安全的浏览器环境，用于安全地进行在线考试。该软件将任何计算机变成一个安全的工作站。它控制对任何实用工具的访问，并防止学生使用未经授权的资源。

ZendStudio 13.5.1 Mac

ZendStudio 13.5.1 Mac

功能强大的PHP集成开发环境

SublimeText3 Mac版

SublimeText3 Mac版

神级代码编辑软件(SublimeText3)

Dreamweaver Mac版

Dreamweaver Mac版

视觉化网页开发工具

显示更多

热门话题

gmail邮箱登陆入口在哪里
7536
15
CakePHP 教程
1379
52
steam的账户名称是什么格式
82
11
win11激活密钥永久
55
19
NYT连接提示和答案
21
86
显示更多