每周总得分的MySQL循环

下面的语句输出

用户名

和

周分数

。我希望它循环17次，得到17周中每一周的分数

SELECT userName, (totalWins+(totalPushs*.5)) AS week1Score FROM (
    SELECT *, SUM(win) AS totalWins, SUM(lost) AS totalLost, SUM(push) AS totalPushs FROM (
        SELECT *, (finalResult = 'win') AS win, (finalResult = 'loss') AS lost, (finalResult = 'push') AS push FROM (
            SELECT userName, IF (pickID=visitorID, visitorResult, homeResult) AS finalResult
            FROM table_users
            JOIN table_picks
            ON table_users.userID = table_picks.userID
            JOIN table_schedule
            ON table_picks.gameID = table_schedule.gameID
            WHERE weekNum = 1
        ) x
    ) x GROUP BY userName
) x ORDER BY userName

上述语句输出以下内容

+-----------------------+
| userName | week1Score |
+-----------------------+

+------------------------------------------------------------------------+
| userName | week1Score | week2Score | week3Score | week4Score | week... |
+------------------------------------------------------------------------+

我希望它循环17次以输出以下内容

+-----------------------+
| userName | week1Score |
+-----------------------+

+------------------------------------------------------------------------+
| userName | week1Score | week2Score | week3Score | week4Score | week... |
+------------------------------------------------------------------------+

---

我将如何使用MySQL循环来实现这一点？

我认为您的查询有点复杂。但是，有一种更好的方法：Pivot查询

MySQL没有“pivot”指令，但可以构建表达式以获得所需的输出

我将构建一个临时表，使内容更易于阅读（我使用用户变量使内容更清晰）：

现在，有趣的部分是：构建数据透视表

-- First, build the expression for each column
select 
    group_concat(
      concat(
        'sum(case weekNum when ', weekNum, ' then score end) as week', weekNum, 'score'
      )
    )
into @sql
from (select distinct weekNum from temp_step01) as a;
-- Then, create a complete SELECT statement
set @sql = concat('select userId, userName, ', @sql, ' from temp_step01 group by userId');
-- OPTIONAL: Check that the sql statement is well written:
select @sql;
-- Now, prepare a statement, and execute it
prepare stmt from @sql;
execute stmt;
-- When you're done, don't forget to deallocate the statement
deallocate prepare stmt;

---

有点费劲，但我想这会给你你所需要的。希望有帮助。

我在“@SQL”附近遇到了一个

SQL语法错误，“

这是我得到的结果，列名

@SQL

值

选择userId、userName、sum（case weekNum when 1 t.

不确定这是否是它的假设，但这不是我想要的。继续执行以下步骤：准备语句并执行它（您是否注意到我在“select@sql”上面写了“OPTIONAL”？这是为了让您在执行之前阅读完整的sql语句）@user2759965

@sql

变量保存获取所需内容所需的查询。但您需要执行它。从@sql；execute stmt；执行

准备stmt以获取结果…当您完成后，
deallocate prepare stmt；
将清理准备好的语句。