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
Solution 1)
Select name,surname,takenDate from students,borrows
where students.studentId = borrows.studentId
Solution 2)
Select name,surname,takenDate from students
join borrows on students.studentId = borrows.studentId
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Select - Join - Where - Çoklu Tablo -Solution 1)
Select students.name,students.surname,books.name,takenDate
from students,borrows,books
where students.studentId = borrows.studentId and
books.bookId = borrows.bookId
Solution 2)
Select students.name,students.surname,books.name,takenDate from students
join borrows on students.studentId = borrows.studentId
join books on books.bookId = borrows.bookId
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Select - Join - Where - Çoklu Tablo -Solution 1)
Select students.name as OgrenciAd,
students.surname,books.name as KitapAd,
takenDate,types.name as TurAd
from students,borrows,books,types
where students.studentId = borrows.studentId and
books.bookId = borrows.bookId and
books.typeId = types.typeId
Solution 2)
Select students.name as studentName,
students.surname,books.name as BookName,
takenDate,types.name as TypeName
from students
join borrows on students.studentId = borrows.studentId
join books on books.bookId = borrows.bookId
join types on books.typeId = types.typeId
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Select - Join - Where - Çoklu Tablo -Solution 1)
Select students.name as studentName,
students.surname,books.name as BookName,
takenDate,types.name as TypeName,
authors.name as AuthorName, authors.surname as AuthorSurname
from students
join borrows on students.studentId = borrows.studentId
join books on books.bookId = borrows.bookId
join types on books.typeId = types.typeId
join authors on authors.authorId = books.authorId
Solution 2)
Select students.name as studentName,students.surname,
books.name as BookName,takenDate,types.name as TypeName ,
authors.name as AuthorName,authors.surname as AuthorSurname
from students, borrows, books, types, authors
where students.studentId = borrows.studentId and
books.bookId = borrows.bookId and
books.typeId = types.typeId and
authors.authorId = books.authorId
ETİKETLER
Select - Join - Where - Çoklu Tablo -Solution 1)
Select students.name as studentName,students.surname,
books.name as BookName,takenDate
from students,borrows,books,types,authors
where students.studentId = borrows.studentId and
books.bookId = borrows.bookId and sinif='11B'
Solution 2)
Select students.name as studentName,students.surname,
books.name as BookName,takenDate
from students
join borrows on students.studentId = borrows.studentId
join books on books.bookId = borrows.bookId
where sinif='11B'
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Select - Join - Where - Çoklu Tablo -Solution 1)
Select students.name as studentName,students.surname,
books.name as BookName,takenDate
from students, borrows, books, types, authors
where students.studentId = borrows.studentId and
books.bookId = borrows.bookId and
sinif='11B' and gender='F'
Solution 2)
Select students.name as studentName,students.surname,
books.name as BookName,takenDate
from students
join borrows on students.studentId = borrows.studentId
join books on books.bookId = borrows.bookId
where sinif='11B' and gender='F'
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Select - Join - Where - Multi Condition - Çoklu Tablo -Solution 1)
Select authors.name, authors.surname, books.name as bookName from authors
join books on authors.authorId = books.authorId
join types on types.typeId = books.typeId
where types.name = 'Drama'
Solution 2)
Select authors.name, authors.surname, books.name as bookName
from authors, books, types
where authors.authorId = books.authorId and
types.typeId = books.typeId and
types.name = 'Drama'
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Select - Join - Where - Multi Condition - Çoklu Tablo -Solution 1)
Select books.name as bookName, authors.name, authors.surname
from authors
join books on authors.authorId = books.authorId
where pagecount >300
Solution 2)
Select authors.name, authors.surname, books.name as bookName
from authors,books
where authors.authorId = books.authorId and pagecount >300
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Select - Join - Where - Multi Condition - Çoklu Tablo -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 = 'Isaac' and authors.surname = 'Asimov'
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 = 'Isaac' and authors.surname = 'Asimov'
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Select - Join - Where - Multi Condition - Çoklu Tablo -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'
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Select - Join - Where - Multi Condition - Sub Query - Çoklu Tablo -Solution 1)
Select sum(pageCount) from books
join types on types.typeId = books.typeId
where types.name = 'Romance'
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Select - Join - Where - Aggragate - Çoklu Tablo -Solution 1)
Select count(*) from books
join types on types.typeId = books.typeId
where types.name = 'Horror'
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Select - Join - Where - Aggragate - Çoklu Tablo -Solution 1)
Select avg(pageCount) from books
join types on types.typeId = books.typeId
where types.name = 'Comics'
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Select - Join - Where - Aggragate - Çoklu Tablo -Solution 1)
Select sum(pageCount) from books
join authors on authors.authorId = books.authorId
where authors.name = 'John' and authors.surname = 'DosPassos'
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Select - Join - Where - Aggragate - Çoklu Tablo -Solution 1)
Select sum(point) from books
join authors on authors.authorId = books.authorId
where authors.name = 'Emily' and authors.surname = 'Dickinson'
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Select - Join - Where - Multi Condition - Aggragate - Çoklu Tablo -Solution 1)
Select count(*) from books
join authors on authors.authorId = books.authorId
where authors.name = 'Edna' and authors.surname = 'Ferber'
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Select - Join - Where - Multi Condition - Aggragate - Çoklu Tablo -Solution 1)
Select count(*) from students
join borrows on students.studentId = borrows.studentId
where students.name = 'Alice' and students.surname = 'Wood'
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Select - Join - Where - Multi Condition - Aggragate - Çoklu Tablo -Solution 1)
Select sum(pageCount) from students
join borrows on students.studentId = borrows.studentId
join books on books.bookId = borrows.bookId
where students.name = 'Ainsley' and students.surname = 'Cooper'
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Select - Join - Where - Multi Condition - Aggragate - Çoklu Tablo -Solution 1)
Select count(distinct authorId) from students
join borrows on students.studentId = borrows.studentId
join books on books.bookId = borrows.bookId
where students.name = 'Ida' and students.surname = 'Gray'
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Select - Distinct - Join - Where - Multi Condition - Aggragate - Çoklu Tablo -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)
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Select - Top - Join - Where - Order By - Sub Query - Çoklu Tablo -Solution 1)
Select name,surname,count(*) BookCount
from students,borrows
where students.studentId = borrows.studentId
group by students.studentId,name,surname
Solution 2)
Select name,surname,count(*) BookCount
from students
join borrows on students.studentId = borrows.studentId
group by students.studentId,name,surname
ETİKETLER
Select - Join - Where - Group By - Aggragate - Alias - Çoklu Tablo -Solution 1)
Select name,surname,count(*) BookCount
from students
join borrows on students.studentId = borrows.studentId
group by students.studentId,name,surname
order by BookCount desc
Solution 2)
Select name,surname,count(*) BookCount
from students,borrows
where students.studentId = borrows.studentId
group by students.studentId,name,surname
order by BookCount desc
ETİKETLER
Select - Join - Where - Group By - Order By - Aggragate - Alias - Çoklu Tablo -