在PostgreSQL中,有Limit和Offset关键字,可以非常容易地对结果集进行分页。
SQL Server的等效语法是什么?
在PostgreSQL中,有Limit和Offset关键字,可以非常容易地对结果集进行分页。
SQL Server的等效语法是什么?
当前回答
因为还没有人提供这个代码:
SELECT TOP @limit f1, f2, f3...
FROM t1
WHERE c1 = v1, c2 > v2...
AND
t1.id NOT IN
(SELECT TOP @offset id
FROM t1
WHERE c1 = v1, c2 > v2...
ORDER BY o1, o2...)
ORDER BY o1, o2...
重要的几点:
ORDER BY必须相同 @limit可以替换为检索结果的数量, @offset是要跳过的结果数 请将性能与以前的解决方案进行比较,因为它们可能更有效 这个解决方案重复了where和order by子句,如果它们不同步,将提供不正确的结果 另一方面,如果需要的话,order by是明确存在的
其他回答
另一个例子:
declare @limit int
declare @offset int
set @offset = 2;
set @limit = 20;
declare @count int
declare @idxini int
declare @idxfim int
select @idxfim = @offset * @limit
select @idxini = @idxfim - (@limit-1);
WITH paging AS
(
SELECT
ROW_NUMBER() OVER (order by object_id) AS rowid, *
FROM
sys.objects
)
select *
from
(select COUNT(1) as rowqtd from paging) qtd,
paging
where
rowid between @idxini and @idxfim
order by
rowid;
select top (@TakeCount) * --FETCH NEXT
from(
Select ROW_NUMBER() OVER (order by StartDate) AS rowid,*
From YourTable
)A
where Rowid>@SkipCount --OFFSET
这个特性现在在SQL Server 2012中变得很容易。 这是从SQL Server 2012开始工作的。
在SQL Server中限制偏移量为11到20行:
SELECT email FROM emailTable
WHERE user_id=3
ORDER BY Id
OFFSET 10 ROWS
FETCH NEXT 10 ROWS ONLY;
订购方式:必需 OFFSET:可选的跳过行数 NEXT:所需的下一行数
参考:https://learn.microsoft.com/en-us/sql/t-sql/queries/select-order-by-clause-transact-sql
您可以在公共表表达式中使用ROW_NUMBER来实现这一点。
;WITH My_CTE AS
(
SELECT
col1,
col2,
ROW_NUMBER() OVER(ORDER BY col1) AS row_number
FROM
My_Table
WHERE
<<<whatever>>>
)
SELECT
col1,
col2
FROM
My_CTE
WHERE
row_number BETWEEN @start_row AND @end_row
我能做到的最接近
select * FROM( SELECT *, ROW_NUMBER() over (ORDER BY ID ) as ct from [db].[dbo].[table] ) sub where ct > fromNumber and ct <= toNumber
我猜类似于select * from [db].[dbo]。[table] LIMIT 0,10