MySQL列到行[重复]

【问题标题】：MySQL Columns To Rows [duplicate]MySQL列到行[重复]
【发布时间】：2012-10-21 16:15:36
【问题描述】：

可能重复：
MYSQL - Rows to Columns

我在 MySQL 中有下表：

有谁知道如何在表格上进行选择以获得以下结果：

GivenName | FamilyName | EMailHome       | PhoneNrHome
--------------------------------------------------------
Angus     | Young      | angus@gmail.com | (123) 456 789

所以链接到同一个UserID的字段应该按列排列。

非常感谢您的帮助！

【问题讨论】：

标签： mysql

【解决方案1】：

Please try self as per below example :

SELECT  
  IFNULL(empId,'Totals') AS EmpId,       -- outer query labels rollup row 
  sums.2005, sums.2006, sums.2007,       -- and calculates horizontal sums 
  sums.2005 + sums.2006 + sums.2007 AS Sums 
FROM (                                   -- inner query groups by employee 
  SELECT                                 -- with an expression for each column 
    EmpID, 
    SUM(IF(Yr=2005,sales,0)) As '2005', 
    SUM(IF(Yr=2006,sales,0)) As '2006', 
    SUM(IF(Yr=2007,sales,0)) As '2007' 
  FROM Sales 
  GROUP BY EmpID WITH ROLLUP 
) AS sums; 
+--------+----------+----------+----------+-----------+ 
| EmpId  | 2005     | 2006     | 2007     | Sums      | 
+--------+----------+----------+----------+-----------+ 
| 1      | 12000.00 | 18000.00 | 25000.00 |  55000.00 | 
| 2      | 15000.00 |  6000.00 |     0.00 |  21000.00 | 
| 3      |     0.00 | 20000.00 | 24000.00 |  44000.00 | 
| Totals | 27000.00 | 44000.00 | 49000.00 | 120000.00 | 
+--------+----------+----------+----------+-----------+

【讨论】：