使用CONTAINS更新字段的MYSQL查询

我想在mySQL中做一个查询，如果部门名称包含在“部门处理”字段中，我需要用流程表的“流程名称”中连接的内容更新部门表的“流程处理”

我的问题是这样的：

department_table    

department_name | processes_handled  
Department 1    | Process A; Process B; Process D;  
Department 2    | Process A; Process C: Process E; Process G;  
Department 3    | Process C; Process D; Process F 




process_table   

process_name    | departments_handling_the_process  
Process A   | Department 1; Department 2  
Process B   | Department 1  
Process C   | Department 2; Department 3  
Process D   | Department 1; Department 3  
Process E   | Department 2  
Process F   | Department 3  
Process G   | Department 2  

UPDATE department_table,process_table
SET processes_handled= (SELECT GROUP_CONCAT(`process_name SEPARATOR '; ')
                        FROM process_table
                        WHERE CONTAINS(process_table.departments_handling_the_process, department_table.department_name))

WHERE CONTAINS(process_table.departments_handling_the_process, department_table.department_name)
;

我当前的update语句如下所示：

department_table    

department_name | processes_handled  
Department 1    | Process A; Process B; Process D;  
Department 2    | Process A; Process C: Process E; Process G;  
Department 3    | Process C; Process D; Process F 




process_table   

process_name    | departments_handling_the_process  
Process A   | Department 1; Department 2  
Process B   | Department 1  
Process C   | Department 2; Department 3  
Process D   | Department 1; Department 3  
Process E   | Department 2  
Process F   | Department 3  
Process G   | Department 2  

UPDATE department_table,process_table
SET processes_handled= (SELECT GROUP_CONCAT(`process_name SEPARATOR '; ')
                        FROM process_table
                        WHERE CONTAINS(process_table.departments_handling_the_process, department_table.department_name))

WHERE CONTAINS(process_table.departments_handling_the_process, department_table.department_name)
;

---

我希望你能帮我修正我的陈述。谢谢，还有更多的力量

基于此评论的假设：

好吧，但我还不清楚你的问题。期望的结果是什么？在我看来，department_表中的process_handled列已经是期望的结果。还是现在它是空的

样本数据：

CREATE TABLE department
    (`department_name` varchar(12), `processes_handled` varchar(43))
;


INSERT INTO department
    (`department_name`, `processes_handled`)
VALUES
    ('Department 1', ''),
    ('Department 2', ''),
    ('Department 3', '')
;


CREATE TABLE process
    (`process_name` varchar(9), `departments_handling_the_process` varchar(26))
;

INSERT INTO process
    (`process_name`, `departments_handling_the_process`)
VALUES
    ('Process A', 'Department 1; Department 2'),
    ('Process B', 'Department 1'),
    ('Process C', 'Department 2; Department 3'),
    ('Process D', 'Department 1; Department 3'),
    ('Process E', 'Department 2'),
    ('Process F', 'Department 3'),
    ('Process G', 'Department 2')
;

解决方案/更新声明：

update
department
set processes_handled = (select group_concat(process_name separator '; ')
                       from process where find_in_set(department_name, replace(departments_handling_the_process, '; ', ',')) != 0);

结果:

select * from department;

| DEPARTMENT_NAME |                          PROCESSES_HANDLED |
|-----------------|--------------------------------------------|
|    Department 1 |            Process A; Process B; Process D |
|    Department 2 | Process A; Process C; Process E; Process G |
|    Department 3 |            Process C; Process D; Process F |

说明：

MySQL中没有

包含
函数。改为使用
find_in_set（）
。还要注意，您必须替换
，
进行编码，以便
在集合中查找（）
正常工作。你可能会遇到更多这样的“陷阱”。有些你会注意到，有些你可能不会（立刻）。以下是省略
replace（）
函数时的输出：

| DEPARTMENT_NAME |    PROCESSES_HANDLED |
|-----------------|----------------------|
|    Department 1 |            Process B |
|    Department 2 | Process E; Process G |
|    Department 3 |            Process F |

因此，要为繁重的测试和调试做好准备。另外，在其他情况下，您可能被迫编写一个函数来拆分逗号分隔的列并将其分散到多行。这里有足够多的stackoverflow示例，其中这是唯一的选项。因此，再次（但这次是最后一次），您将在数据库设计方面遇到很多麻烦


了解更多有关所用函数的信息
现场观看它的工作
请阅读：感谢您的回复！不过，我对数据库列中的分隔列表没有问题。我感谢您的关注，先生，但我仍然需要有关当前情况的帮助，而不是有关分隔列表的帮助。谢谢我不想把这变成一场讨论，但因为你似乎没有领会我的观点：使用分隔列表是一个丑陋的混乱，很难处理。使用它们的原因只有两个。1.谁也不知道。2.在非规范化维度的高性能数据仓库中。甚至这种情况也相当罕见。事实上，你还没有得到答案，这可能是一场噩梦的结果。重新设计你的数据库，你会惊讶于你的任务通常是多么容易解决。恕我直言，我相信你所说的都是真的（我会记住）。然而，我仍然想得到手头问题的答案，不管当前的设置是否是一场噩梦。非常感谢！非常感谢你。我使用以下用户定义的函数来分隔分隔的字符串：创建函数SPLIT_STR（x VARCHAR（255），delim VARCHAR（12），pos INT）返回VARCHAR（255）返回REPLACE（SUBSTRING（SUBSTRING_INDEX（x，delim，pos），LENGTH（SUBSTRING_INDEX（x，delim，pos-1））+1，delim“”）；