SQL Join Sub Query Examples

1-)

Solution 1)

Select distinct students.* from students 
join borrows on students.studentId = borrows.studentId
join books on books.bookId = borrows.bookId
join authors on authors.authorId = books.authorId  
where authors.name = 'Fyodor' and authors.surname = 'Dostoevsky' and sinif = '10A'

Solution 2)

Select distinct students.* 
from students, borrows, books, authors
where students.studentId = borrows.studentId and 
      books.bookId = borrows.bookId and 
	  authors.authorId = books.authorId and 
	  authors.name = 'Fyodor' and authors.surname = 'Dostoevsky' and 
	  sinif = '10A'

ETİKETLER

Select - Join - Where - Multi Condition - Sub Query - Çoklu Tablo -

2-)

Solution 1)

Select top 1 students.*,takendate 
from students,borrows 
where students.studentId = borrows.studentId 
order by borrows.takenDate desc

Solution 2)

Select top 1 students.*,takendate 
from students 
join borrows on students.studentId = borrows.studentId 
order by borrows.takenDate desc

Solution 3)

Select students.*,takendate 
from students 
join borrows on students.studentId = borrows.studentId 
where takenDate = (Select max(takenDate) from borrows)

ETİKETLER

Select - Top - Join - Where - Order By - Sub Query - Çoklu Tablo -