Question

When I had only one inner join in my SQL statement, it worked perfectly. I tried joining a second table, and now I am getting an error that says there is a syntax error (missing operator). What is wrong here?

adsFormView.SelectCommand = "SELECT * FROM [tableCourse] INNER JOIN [tableGrade] ON [tableCourse].[grading] = [tableGrade].[id] INNER JOIN [tableCourseType] ON [tableCourse].[course_type] = [tableCourseType].[id] WHERE [prefix]='" & myPrefix & "' AND [course_number]='" & myCourseNum & "'"

Answer 1

For multi-table joins, you have to nest the extra joins in brackets:

SELECT ...
FROM ((origintable
JOIN jointable1 ON ...)
JOIN jointable2 ON ...)
JOIN jointable3 ON ...

basically, for every extra table you join past the first, you need a bracket before the original ‘FROM’ table, and a closing bracket on the matching JOIN ‘on’ clause.