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 * from students
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Select -Solution 1)
Select * from books
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Select -Solution 1)
Select * from students
where name = 'Bill'
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Select - Where -Solution 1)
Select * from students
where name like 'a%'
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Select - Where - Like -Solution 1)
Select * from students
where name like '%a'
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Select - Where - Like -Solution 1)
Select * from students
where name like '%a%'
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Select - Where - Like -Solution 1)
Select * from books
where bookId like '%1%'
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Select - Where - Like -Solution 1)
Select * from students
where name like '_a%'
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Select - Where - Like -Solution 1)
Select * from students
where name like '%a_'
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Select - Where - Like -Solution 1)
Select * from students
where studentId<= 20 and studentId< 30
Solution 2)
Select * from students
where studentId between 20 and 30
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Select - Where - Between - Multi Condition -Solution 1)
select * from students
where name= 'James' and surname not like '%a%'
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Select - Where - Like - Multi Condition -Solution 1)
select *from students
where (name='Kane' or name= 'Jane') and studentId <30
Solution 2)
Select * from students
where name='Kane' and studentId <30 or name='Jane' and studentId <30
Solution 3)
select * from students
where name in('Kane','Jane') and studentId<30
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Select - Where - Brackets - Multi Condition -Solution 1)
Select name + surname from students
Solution 2)
Select name + surname as ns from students
Solution 3)
Select name + ' ' + surname as ns from students
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Select - Alias -Solution 1)
Select * from books
where bookId in(3,4,8,9,11,23)
Solution 2)
Select * from books
where bookId = 3 or
bookId = 4 or
bookId = 8 or
bookId = 9 or
bookId =11 or
bookId = 23
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Select - Where -Solution 1)
Select * from books
where bookId % 2 = 0
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Select - Where -Solution 1)
select * from students
where name = 'Perez' and surname not like '%a%'
Solution 2)
select * from students
where name = 'Perez' and not surname like '%a%'
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Select - Where - Multi Condition -Solution 1)
select * from students
where ("Edwards" or "Baker") and studentId<30
Solution 2)
select * from students
where name='Edwards' and studentId<30 or
name='Baker' and studentId<30
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Select - Where - Brackets - Multi Condition -Solution 1)
select * from students
where studentId=1 or studentId=7 or
studentId=11 or studentId=17
Solution 2)
select * from student
where studentId in (1,7,11,17)
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Select - Where -Solution 1)
Select * from students
where studentId % 2 = 1
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Select - Where -Solution 1)
Select * from student
where name like 'a%' and studentId % 2 = 1
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Select - Where - Multi Condition -Solution 1)
Select * from students
order by name
Solution 2)
Select * from students
order by 2
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Select - Order By -Solution 1)
Select * from students
where gender = 'M'
order by name
Solution 2)
Select * from students
where gender = 'M'
order by 2
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Select - Where - Order By -Solution 1)
Select * from students
order by name desc
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Select - Order By -Solution 1)
Select * from students
order by sinif,gender
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Select - Order By -Solution 1)
Select * from students
order by newid()
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Select - Order By -Solution 1)
Select * from students
where gender = 'M'
order by newid()
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Select - Where - Order By -Solution 1)
select * from students
where sinif='10A' and gender='M'
order by newid()
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Select - Where - Order By -Solution 1)
Select top 3 * from students
order by newid()
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Select - Top - Order By -Solution 1)
Select top 1 * from students
where sinif= '10A'
order by newid()
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Select - Top - Where - Order By -Solution 1)
Select top 1 * from students
where sinif= '10A' and gender= 'F'
order by newid()
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Select - Top - Where - Order By - Multi Condition -Solution 1)
Select top 1 * from books
order by sayfaSayisi desc
Solution 2)
Select * from books
where sayafaSayisi=(Select max(sayfaSayisi) from books)
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Select - Top - Where - Order By - Sub Query - Aggragate -Solution 1)
Select * from students
order by birthdate
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Select - Order By -Solution 1)
Insert into authors
values('x','y')
Solution 2)
Insert into authors(name,surname)
values('x','y')
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Insert -Solution 1)
Insert into students
values ('x','y',null,null,null,null)
Solution 2)
Insert into students(name,surname)
values ('x','y')
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Insert -Solution 1)
Insert into students(name,surname)
Select name,surname from authors
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Select - Insert -Solution 1)
Insert into authors(name,surname)
values('Ernest','Dowson'),
('Mother','Goose')
Solution 2)
Insert into authors
values ('Ernest','Dowson'),
('Mother','Goose')
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Insert -Solution 1)
Insert into authors(name,surname)
select name,surname from students
where sinif='9A' and gender='M'
Solution 2)
Insert into authors
select name,surname from students
where sinif='9A' and gender='M'
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Select - Insert - Where -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
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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'
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 count(*) from books
Solution 2)
Select count(bookId) from books
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Select - Aggragate -Solution 1)
Select count(*) from students
Solution 2)
Select count(studentId) from students
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Select - Aggragate -Solution 1)
Select sum(pageCount) from books
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Select - Aggragate -Solution 1)
Select sum(point) from students
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Select - Aggragate -Solution 1)
Select avg(point) from students
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Select - Aggragate -Solution 1)
Select min(pageCount) from books
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Select - Aggragate -Solution 1)
Select max(point) from books
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Select - Aggragate -Solution 1)
Select avg(pageCount) from books
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Select - Aggragate -Solution 1)
Select count(*) from students
where sinif = '9B'
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Select - Where - Aggragate -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)
Insert into authors(name,surname)
Select top 5 name,surname from students order by newid()
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Select - Insert - Top - Order By -Solution 1)
Insert into students(name,surname,sinif)
Select name,surname,'12M' from authors where name like '%a%'
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Select - Insert - Where -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 sinif,count(*) as StudentCount
from students
group by sinif
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Select - Group By - Aggragate -Solution 1)
Select gender,count(*) as StudentCount
from students
group by gender
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Select - Group By - Aggragate - Alias -Solution 1)
Select sinif,gender,count(*) as StudentCount
from students
group by gender,sinif
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Select - Group By - Aggragate - Alias -Solution 1)
Select sinif,gender,count(*) as StudentCount
from students
where gender = 'F'
group by gender,sinif
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Select - Where - Group By - Aggragate - Alias -Solution 1)
Select sinif,count(*) as StudentCount
from students
group by sinif
having count(*) >= 30
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Select - Group By - Having - Alias -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
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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
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Select - Join - Where - Group By - Order By - Aggragate - Alias - Çoklu Tablo -Solution 1)
Select name,surname,count(borrowsno) BookCount
from students
left join borrows on students.studentId = borrows.studentId
group by students.studentId,name,surname
order by BookCount
Solution 2)
Select name, surname,
(Select count(*) from borrows
where students.studentId = borrows.studentId) as BookCount
from students
order by BookCount
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Select - Top - Where - Having - Sub Query -Solution 1)
Select Year(takendate) as Year, datepart(qq,takendate) as Quarter,count(*) as Count
from borrows
group by Year(takendate),datepart(qq,takendate)
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Select - Group By - SQL Functions -Solution 1)
Select Year(birthdate) as Year, datepart(qq,birthdate) as Quarter,count(*) as Count
from students
group by Year(birthdate),datepart(qq,birthdate)
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Select - Group By - SQL Functions - Alias -Solution 1)
Select students.* from students
left join borrows on students.studentId = borrows.studentId
where borrowsno is null
Solution 2)
Select * from students
where studentId not in
(Select studentId from borrows)
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Select - Where - Sub Query - Çoklu Tablo - Left Join -Solution 1)
Select books.* from books
left join borrows on books.bookId = borrows.bookId
where borrowsno is null
Solution 2)
Select * from books
where bookId not in
(Select bookId from borrows)
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Select - Where - Sub Query - Çoklu Tablo - Left Join -Solution 1)
Delete from students
where studentId = 5
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Delete - Where -Solution 1)
Delete from books
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Delete -Solution 1)
Delete from borrows
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Delete -Solution 1)
Delete from books
where pageCount between 50 and 100
Solution 2)
Delete from books
where pagecount<=100 and pagecount>=50
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Delete - Where -Solution 1)
Delete from students
where studentId not in
(Select studentId from borrows)
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Delete - Where - Sub Query -Solution 1)
Delete from students
where name = 'Gray'
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Delete - Where -Solution 1)
Delete from students
where name = 'Gray' and surname = 'King'
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Delete - Where - Multi Condition -Solution 1)
Delete from students
where studentId in (Select studentId from borrows
group by studentId
having count(*)<5)
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Delete - Where - Group By - Having - Sub Query -Solution 1)
Create Procedure AddTwoNumber(@p1 int,@p2 int,@Result int output)
as
Begin
Set @Result = @p1+ @p2
End
--To Execute The Procedure
Declare @r int
Execute AddTwoNumber 20,25,@r output
Select @r as Result
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Procedure - Declare -Solution 1)
Create Procedure Sp_Random_Value
@first int,
@second int,
@result int output
As
Begin
Set @result =Floor(RAND() * (@second-@first))+@first
End
--To Execute the Procedure
Declare @r int
Execute Sp_Random_Value 20,30,@r output
Select @r
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Procedure - Declare -Solution 1)
Create procedure randomGenerate(@unit int,@min int,@max int)
as
Begin
Declare @numbers table(number int)
Declare @i int = 0
Declare @number int
while (@i<@unit)
Begin
Set @number = floor(rand()*(@max-@min+1))+@min
if(not exists(Select * from @numbers where number = @number))
begin
insert into @numbers values(@number)
Set @i = @i + 1
end
end
Select * from @numbers order by 1
End
--To Execute Stored Procedure
Execute randomGenerate 5,20,30
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Select - Insert - Procedure - Declare -Solution 1)
Create procedure factor(@number int)
as begin
Declare @i int = 1,@result int=1
while (@i<=@number)
Begin
Set @result = @result * @i
Set @i += 1
End
Select @result
End
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Procedure - Declare -Solution 1)
Create Procedure myPower(@num int,@pow int, @result int output) As
Begin
Declare @i int = 0;
Set @result = 1
while(@i<@pow)
Begin
Set @result = @result * @num
Set @i += 1
End
End
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Procedure - Declare -Solution 1)
Create Procedure sumThree
@n1 int,
@n2 int,
@n3 int,
@result int output as
Begin
Set @result = @n1+@n2+@n3
End
--To Execute The Procedure
Declare @result int
Execute sumThree 5,30,12,@result output
Select @result
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Procedure - Declare -Solution 1)
Create Procedure sp_isPrime (@number int,@result bit output) as
Begin
Set @result = 1
Declare @i int = 2
While (@i<@number)
Begin
if(@number % @i = 0)
Begin
Set @result = 0
break
End
Set @i += 1
End
return @result
End
--To Execute The Stroed Procedure
Declare @result bit
Execute sp_isPrime 11,@result output
Select @result
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Procedure - Declare -Solution 1)
Create Procedure sp_Devide(@n1 int,@n2 int,@division int output,@remaining int output) as
Begin
SEt @division = 0
While(@n2<=@n1)
Begin
Set @n1 = @n1-@n2
Set @division+=1
End
Set @remaining = @n1
End
--To Execute the Stored Procedure
Declare @d int,@r int
Execute sp_Devide 34,7,@d output,@r output
Select @d Division,@r Remaining
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Procedure - Declare -Solution 1)
Update students set point=100
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Update -Solution 1)
Update books set point +=5
Solution 2)
Update books set point = point + 5
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Update -Solution 1)
Update students set name='Veli'
where name = 'Ali'
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Update - Where -Solution 1)
Update students set name = 'Süleyman' where studentId = 20
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Update - Where -Solution 1)
Update students set sinif = '10C' where studentId between 20 and 30
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Update - Where - Between -Solution 1)
Update students set point += 5 where sinif = '10E' and gender = 'E'
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Update - Where - Multi Condition -Solution 1)
Update students set name = 'Arzu', surname = 'Çelik' where studentId = 24
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Update - Where -Solution 1)
Update books set point +=10
where pagecount = (Select MAX(pagecount) from books)
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Update - Where - Sub Query - Aggragate -Solution 1)
Update books set point += 1
where typeId = (Select typeId from books where name = 'Horror')
Solution 2)
Update books set point += 1
where typeId in (Select typeId from books where name = 'Horror')
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Update - Where - Sub Query -Solution 1)
Select distinct name from students
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Select - Distinct -Solution 1)
Select distinct class from students
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Select - Distinct -Solution 1)
Select distinct name, surname from students
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Select - Distinct -Solution 1)
Select top 5 * from students
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Select - Top -Solution 1)
Select top 10 * from authors
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Select - Top -Solution 1)
Select distinct top 5 name from students
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Select - Top - Distinct -Solution 1)
Select distinct top 3 name from books
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Select - Top - Distinct -