Question

我的查询

$con=mysqli_query($sql,"(SELECT  Church Name, Class, Student Name, Mark FROM Church_details INNER JOIN Class_details ON Church_details.Church id=Class_details.Church id GROUP BY Class ORDER BY Student Name)")

我收到的错误是这样的：

   You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'id=Class_details.Church id GROUP BY Class ORDER BY Student Name)' at line 1

Answer 1

字段中不能包含空格。我建议看看它是否可能是Church_id而不是“Church id”。同样适用于Student_name

Answer 2

SELECT  Church Name, Class, Student Name, Mark 
FROM Church_details INNER JOIN Class_details 
ON Church_details.Church id=Class_details.Church id 
GROUP BY Class 
ORDER BY Student Name)")

部分

ON Church_details.Church id=Class_details.Church id

你为Church Id使用了一个空格。这个表是否真的有一个带有空格的列名。如果它，你应该像这样输入

Church_details.[Church Id]

我敢打赌，该表的列是Church_Id

使用内部联接获取错误

2 个答案: