I want to get rows from 100-150 from my table in sql server 2008, how i can do that? Is there any way to do so? as much i search Limit keyword is available in mysql but for sql server use common table technique but i don't want to do like that is there any other way available as it is available in Mysql?
select * from
(select row_number() over (order by #column) as row,* from Table) as t
where row between 100 and 150
#column to be replaced by a colomn from your table witch well be used to order the result
use sql limit
http://php.about.com/od/mysqlcommands/g/Limit_sql.htm
In SQL 2005 and above there is a ROW_NUMBER() function. If you need something that works for both MySQL and SQL Server though then I don't know if this is available in MySQL as I've never used it.
http://msdn.microsoft.com/en-us/library/ms186734.aspx
The example given in the linked page that seems most relevant is the following, where the results of a query are ordered by date, and then rows 50 to 60 from that result set are returned.
USE AdventureWorks2012;
GO
WITH OrderedOrders AS
(
SELECT SalesOrderID, OrderDate,
ROW_NUMBER() OVER (ORDER BY OrderDate) AS RowNumber
FROM Sales.SalesOrderHeader
)
SELECT SalesOrderID, OrderDate, RowNumber
FROM OrderedOrders
WHERE RowNumber BETWEEN 50 AND 60;
Actuall, the least expensive way to do this is using top, and then row_number()
select *
from (select *, row_number() over (order by (select NULL)) as rownum
from (select top 150 t.*
from t
) t
) t
where rownum >= 100
However, I do give you one caution. There is no such thing as rows 100-150 in a relational table, because these are inherently unordered. You need to specify the ordering. For this, you need order by:
select *
from (select *, row_number() over (order by <field>) as rownum
from (select top 150 t.*
from t
order by <field>
) t
) t
where rownum >= 100
Related
I have table with rows that look like this:
DateTime, Field1, Field2, Field3
I want to get the TOP 3 records by date, by day. For one record I would execute
SELECT TOP(3) *
FROM tum
I need that for each day. I am assuming I would use partition or cross apply, but the actual syntax for this is not clear to me.
You would use row_number():
select t.*
from (select t.*,
row_number() over (partition convert(date, datetime) order by ?) as seqnum
from t
) t
where seqnum <= 3;
how to add to the query max(o.Acct)-1 rows. I need to visualize the last two o.Acct rows. My query is currently showing only the max(o.Acct)
SELECT Max(o.Acct) AS [MaxAcct],o.ObjectID,o.Opertype
FROM Operations o
GROUP By o.ObjectID,o.Opertype
If you want to see the last two rows (per group), you're better off using ROW_NUMBER() rather than GROUP BY.
SELECT
*
FROM
(
SELECT
*,
ROW_NUMBER() OVER (PARTITION BY ObjectID,
Opertype
ORDER BY Acct DESC
)
AS sequence_id
FROM
Operations
)
sortedOperations
WHERE
sequence_id <= 2
ORDER BY
ObjectID,
Opertype,
Acct
If you want the last two of something, I'm thinking order by and top. Something like this:
select top (2) o.*
from Operations o
order by o.acct desc;
I'm working on a small project in which I'll need to select a record from a temporary table based on the actual row number of the record.
How can I select a record based on its row number?
A couple of the other answers touched on the problem, but this might explain. There really isn't an order implied in SQL (set theory). So to refer to the "fifth row" requires you to introduce the concept
Select *
From
(
Select
Row_Number() Over (Order By SomeField) As RowNum
, *
From TheTable
) t2
Where RowNum = 5
In the subquery, a row number is "created" by defining the order you expect. Now the outer query is able to pull the fifth entry out of that ordered set.
Technically SQL Rows do not have "RowNumbers" in their tables. Some implementations (Oracle, I think) provide one of their own, but that's not standard and SQL Server/T-SQL does not. You can add one to the table (sort of) with an IDENTITY column.
Or you can add one (for real) in a query with the ROW_NUMBER() function, but unless you specify your own unique ORDER for the rows, the ROW_NUMBERS will be assigned non-deterministically.
What you're looking for is the row_number() function, as Kaf mentioned in the comments.
Here is an example:
WITH MyCte AS
(
SELECT employee_id,
RowNum = row_number() OVER ( order by employee_id )
FROM V_EMPLOYEE
ORDER BY Employee_ID
)
SELECT employee_id
FROM MyCte
WHERE RowNum > 0
There are 3 ways of doing this.
Suppose u have an employee table with the columns as emp_id, emp_name, salary. You need the top 10 employees who has highest salary.
Using row_number() analytic function
Select * from
( select emp_id,emp_name,row_number() over (order by salary desc) rank
from employee)
where rank<=10
Using rank() analytic function
Select * from
( select emp_id,emp_name,rank() over (order by salary desc) rank
from employee)
where rank<=10
Using rownum
select * from
(select * from employee order by salary desc)
where rownum<=10;
This will give you the rows of the table without being re-ordered by some set of values:
SELECT ROW_NUMBER() OVER (ORDER BY (SELECT '1')) AS RowID, * FROM #table
If using SQL Server 2012 you can now use offset/fetch:
declare #rowIndexToFetch int
set #rowIndexToFetch = 0
select
*
from
dbo.EntityA ea
order by
ea.Id
offset #rowIndexToFetch rows
fetch next 1 rows only
For example -
SELECT * FROM user_names returns about 100 rows.
How would you query to get only row no.30 to row no.40?
Well with MySQL you would do it as follows:
SELECT * FROM user_names LIMIT 30,10
you can use row_number
with CTE_Table
as (SELECT id, ROW_NUMBER() OVER(ORDER BY id DESC) AS Row_Number
FROM dbo.a)
select * from CTE_Table
WHERE Row_Number BETWEEN 30 AND 40
Assuming SQL Server
SELECT * FROM
(SELECT ROW_NUMBER() OVER (ORDER BY user_names.id) as RowNumber, *
from user_names) un
where un.RowNumber between 30 and 40
replace the ORDER BY clause with whatever you want to order by.
I have a table 'articles' : id / uid / last_update / content.
I want to construct a sql statement that selects an arbitrary number(say 3) of records of each user(identified by uid) that are most recently updated from the table. How can I do that?
In SQL Server and Oracle, you can use ROW_NUMBER() to label records per user. The following query tags rn=1 on the latest row for that user, rn=2 on the second latest, and so on:
select *
from (
select
row_number() over (partition by uid order by UpdateDt desc)
as rn
, *
from YourTable
) sub
where rn <= 3
The subquery is required because you can't use ROW_NUMBER() in a WHERE clause directly.
If you're using MySQL, this problem is much harder. Here's a link to a solution with user variables.
DECLARE #Top tinyint;
SELECT #Top = ABS(CHECKSUM(NEWID())) % 5 + 1;
;WITH MyCTE AS
(
SELECT
stuff, things,
ROW_NUMBER() OVER (PARTITION BY uid ORDER BY UpdatedDateTime DESC) AS Ranking
FROM
MyTable
)
SELECT
stuff, things
FROM
MyCTE
WHERE
Ranking <= #Top