Pagination prior to SQL Server 2012

Pagination is common requirement for any application, where we pull data in chunks depending upon the page number and size of page. Here in this article we will see how we can achieve pagination through SQL server prior to SQ: Server 2012,

Here we are declaring a table Employee with three fields.

create table Employees (

empid int NOT NULL,

empname varchar(25) NOT NULL,

salary decimal(15,2)

)

Command(s) completed successfully.

Lets insert few data in the table.

declare @i int = 0

while @i < 10000

begin

insert into Employees

select round(rand() * 10000,0),'abc' + cast(round(rand()*10,0) as varchar), rand()*1000

set @i = @i + 1

end

Now since our table is ready, its time to enter implement pagination, here in the below script, we have taken 2 variable, @PageNo, which indicate which page to see for data and second one is @Size which says the number of records in each page. Here we are using Row_Number ranking function, Approach is

• ·         We are giving a row number in sequence to all rows of table using ROW_NUMBER Rank function.
• ·         Then according to the value of page number and page size, we are extracting the records.
• ·         Eg. If @PageNo is 4 and row @PageSize is 5 then the row to return should  have 20-25 as row numbers.

declare @pageNo int

set @pageNo=1

declare @Size int

set @Size=5

select * from (select ROW_NUMBER ()  over ( order by empid asc ) as rowno , employees.* from Employees ) s

where s.rowno > (@pageNo*@Size) and s.rowno <=((@pageNo+1)*@Size)

rowno                empid       empname                   salary

-------------------- ----------- ------------------------- ---------

1                    10          abc5                      80.35

2                    11          abc9                      287.90

3                    12          abc5                      815.79

4                    13          abc5                      433.73

5                    14          abc4                      645.19

That’s all one need to do to implement Pagination in SQL Server Prior to SQL Server 2012.

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