How to implement LIMIT with SQL Server?
Starting SQL SERVER 2005, you can do this...
USE AdventureWorks;
GO
WITH OrderedOrders AS
(
SELECT SalesOrderID, OrderDate,
ROW_NUMBER() OVER (ORDER BY OrderDate) AS 'RowNumber'
FROM Sales.SalesOrderHeader
)
SELECT *
FROM OrderedOrders
WHERE RowNumber BETWEEN 10 AND 20;
or something like this for 2000 and below versions...
SELECT TOP 10 * FROM (SELECT TOP 20 FROM Table ORDER BY Id) ORDER BY Id DESC
Equivalent of LIMIT and OFFSET for SQL Server?
The equivalent of LIMIT
is SET ROWCOUNT
, but if you want generic pagination it's better to write a query like this:
;WITH Results_CTE AS
(
SELECT
Col1, Col2, ...,
ROW_NUMBER() OVER (ORDER BY SortCol1, SortCol2, ...) AS RowNum
FROM Table
WHERE <whatever>
)
SELECT *
FROM Results_CTE
WHERE RowNum >= @Offset
AND RowNum < @Offset + @Limit
The advantage here is the parameterization of the offset and limit in case you decide to change your paging options (or allow the user to do so).
Note: the @Offset
parameter should use one-based indexing for this rather than the normal zero-based indexing.
LIMIT not working in SQL
Sql Server doesn't use limit
like that, it uses top
instead.
select top 5 * from DimCustomer order by MiddleName desc
If you are looking for pagination, you can use offset
and fetch
in sql server 2012+
select *
from DimCustomer
order by MiddleName desc
offset 0 rows
fetch next 5 rows only;
For more patterns and options for pagination, check here: Pagination with offset / fetch
: A better way - Aaron Betrand
LIMIT 10..20 in SQL Server
The LIMIT
clause is not part of standard SQL. It's supported as a vendor extension to SQL by MySQL, PostgreSQL, and SQLite.
Other brands of database may have similar features (e.g. TOP
in Microsoft SQL Server), but these don't always work identically.
It's hard to use TOP
in Microsoft SQL Server to mimic the LIMIT
clause. There are cases where it just doesn't work.
The solution you showed, using ROW_NUMBER()
is available in Microsoft SQL Server 2005 and later. This is the best solution (for now) that works solely as part of the query.
Another solution is to use TOP
to fetch the first count + offset rows, and then use the API to seek past the first offset rows.
See also:
- "Emulate MySQL LIMIT clause in Microsoft SQL Server 2000"
- "Paging of Large Resultsets in ASP.NET"
How to implement LIMIT with the below microsoft server query
Thanks to Gordon. I have found the correct syntax to use offset and limit with mssql queries.
Example: offset ".$offset." ROWS FETCH NEXT ".$limit." ROWS ONLY
Limit size and/or frequency of user queries in SQL Server
The feature you're looking for is called Resource Governor.
You can classify incoming connections and assign them to a Workload Group, which specifies
CREATE WORKLOAD GROUP group_name
[ WITH
( [ IMPORTANCE = { LOW | MEDIUM | HIGH } ]
[ [ , ] REQUEST_MAX_MEMORY_GRANT_PERCENT = value ]
[ [ , ] REQUEST_MAX_CPU_TIME_SEC = value ]
[ [ , ] REQUEST_MEMORY_GRANT_TIMEOUT_SEC = value ]
[ [ , ] MAX_DOP = value ]
[ [ , ] GROUP_MAX_REQUESTS = value ] )
]
[ USING {
[ pool_name | "default" ]
[ [ , ] EXTERNAL external_pool_name | "default" ] ]
} ]
[ ; ]
And maps to a Resource Pool which has limited access to server resources.
In the SQL Server Resource Governor, a resource pool represents a
subset of the physical resources of an instance of the Database
Engine. Resource Governor enables you to specify limits on the amount
of CPU, physical IO, and memory that incoming application requests can
use within the resource pool. Each resource pool can contain one or
more workload groups.
It's important to combine Resource Governor with snapshot-based reads for the reporting users, either using SNAPSHOT isolation, or by setting the database to READ_COMMITTED_SNAPSHOT. Otherwise a reporting user with limited access to resources can acquire locks that interfere with other workloads.
Can I use LIMIT N,M on SQL Server database
To answer for your query, you may want: (depending on your values for M
and N
)
WITH cte AS
(
SELECT [id], [name], ROW_NUMBER() OVER (ORDER BY t2.[iid] ASC) AS rowNumber
FROM [dbo.test_db_002] t1
LEFT JOIN [dbo.test_db_003] t2 ON t1.[id] = t2.[itmid]
)
SELECT [id], [name]
FROM cte
WHERE rowNumber BETWEEN 3 AND 5
Something to watch out for, the values in the between are BETWEEN N AND N + M
Also, here's a link with information about Common Table Expressions which is the WITH cte
syntax I used.
SQL Server OFFSET and LIMIT
You should add another step to your query. ROW_NUMBER()
can't be used in the same query in which you define it, so you have to wrap it all in another select like below. The where clause relates to all the fields in the FROM
table/query, so rownumber doesn't exist yet.
select * from
(SELECT Job_No,
ROW_NUMBER() OVER(ORDER BY Job_No) AS rownumber,
BaselineStart, BaselineFinish, ExpectedStart, ExpectedFinish,
ScheduledStart, ScheduledFinish, ActualStart, ActualFinish
FROM Schedule)
WHERE rownumber BETWEEN 10 AND 20
How to limit by specific column?
The problem is that limit
limits the number of rows. But data for one state is on multiple rows. You want 20 states, but don't know how many rows that is.
You can address this using dense_rank()
to get the top 20 states. Then the filtering is in the where
clause:
select to_state, cnt, service
from(select ss.*,
dense_rank() over (order by state_count desc, to_state) as seqnum
from (select to_state, count(*) as cnt, service,
sum(count(*)) over (partition by to_state) as state_count
from uscount
group by 1, 3
) ss
) ss
where seqnum <= 20
order by state_count, to_state, service;
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