The Queries in this page solved at the library database. It is a sample database generated by randomly records. You can download it from the link. You will see more than 500 examples in the future. You can filter from the search panel above by selecting sql statements. I hope you will like it

# 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

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##### 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

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Library Database