MySQL试图同时使用内部连接和联合？

所以基本上我想做的是在两个表上使用内部联接，但是只选择表A中的特定行和表B中相应的行

表A被称为“课程”，我想在“课程标题”栏下选择名为“微积分”、“英国文学I”和“工作室艺术”的条目，以及它们对应的“部门id”，我将使用“部门id”作为参考，创建与第二个表的内部联接，第二个表称为“部门”，'其中包含“部门id”和“部门名称”列

我认为这样做的唯一方法是使用一个联盟来选择三个特定的课程，但我想不出一种方法来让内部连接与之一起工作？我尝试了几种不同类型的语法并不断出现错误，以下是我的尝试之一：

(SELECT course.course_title, cours' at line 1
mysql> (SELECT course_title, department_id FROM course WHERE course_title = 'Calculus')
-> UNION
-> (SELECT course_title, department_id FROM course WHERE course_title = 'British Literature I')
-> UNION
-> (SELECT course_title, department_id FROM course WHERE course_title = 'Studio Art I')
-> UNION
-> (SELECT department_name, department_id FROM departments)
-> FROM departments INNER JOIN course ON departments.department_id = course.department_id;

(SELECT course.course_title, course.department_id, departments.department_id, departments.department_name WHERE course.course_title = 'Calculus')
-> UNION
-> (SELECT course.course_title, course.department_id, departments.department_id, departments.department_name WHERE course.course_title = 'British Literature I')
-> UNION
-> (SELECT course.course_title, course.department_id, departments.department_id, departments.department_name WHERE course.course_title = 'Studio Art I')
-> FROM departments INNER JOIN course ON departments.department_id = course.department_id;

下面是我的另一个尝试：

(SELECT course.course_title, cours' at line 1
mysql> (SELECT course_title, department_id FROM course WHERE course_title = 'Calculus')
-> UNION
-> (SELECT course_title, department_id FROM course WHERE course_title = 'British Literature I')
-> UNION
-> (SELECT course_title, department_id FROM course WHERE course_title = 'Studio Art I')
-> UNION
-> (SELECT department_name, department_id FROM departments)
-> FROM departments INNER JOIN course ON departments.department_id = course.department_id;

(SELECT course.course_title, course.department_id, departments.department_id, departments.department_name WHERE course.course_title = 'Calculus')
-> UNION
-> (SELECT course.course_title, course.department_id, departments.department_id, departments.department_name WHERE course.course_title = 'British Literature I')
-> UNION
-> (SELECT course.course_title, course.department_id, departments.department_id, departments.department_name WHERE course.course_title = 'Studio Art I')
-> FROM departments INNER JOIN course ON departments.department_id = course.department_id;

有没有关于这是否可行的想法？如果是，如何更正语法？如果没有，还有什么方法

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谢谢

你应该使用IN子句

像这样

WHERE course IN ('Calculus','Physics','Art')

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你应该使用IN子句

像这样

WHERE course IN ('Calculus','Physics','Art')

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您可以像下面这样编写查询

SELECT course.course_title, course.department_id, departments.department_id, departments.department_name 
FROM departments 
  INNER JOIN course ON departments.department_id = course.department_id
WHERE course.course_title IN ('Calculus', 'British Literature I','Studio Art I')

---

您可以像下面这样编写查询

SELECT course.course_title, course.department_id, departments.department_id, departments.department_name 
FROM departments 
  INNER JOIN course ON departments.department_id = course.department_id
WHERE course.course_title IN ('Calculus', 'British Literature I','Studio Art I')

---

“错误1064（42000）：您的SQL语法有错误；请检查与您的MySQL服务器版本对应的手册，以了解在“WHERE course.course_title='calculation'）附近使用的正确语法。”我将尝试按照下面的建议使用in子句，看看这是否解决了问题……”错误1064（42000）：您的SQL语法有错误；请查看与您的MySQL服务器版本对应的手册，以了解在“WHERE course.course_title='calculation'）附近使用的正确语法。“我将尝试使用下面建议的in子句，看看这是否解决了问题……啊，好的。完美的非常感谢你！！啊，好的。完美的非常感谢你！！