[英]Query similar to TOP 10 to select inbetween records?
我有100條記錄,可以在查詢中使用“ TOP 10”選擇前10條記錄。 同樣,有什么能獲得第20至30條記錄嗎?
由於使用的是SQL Server 2005,因此可以使用“新” ROW_NUMBER()函數。 這將給您第11至20行:
SELECT Description, Date
FROM (SELECT ROW_NUMBER() OVER (ORDER BY Date DESC)
AS Row, Description, Date FROM LOG)
AS LogWithRowNumbers
WHERE Row >= 11 AND Row <= 20
如果您有很多記錄,則在內部SELECT子句中使用TOP X可能會加快速度,因為如果您只打算抓取11到20條記錄,則返回1000條記錄是沒有用的:
SELECT Description, Date
FROM (SELECT TOP 20 ROW_NUMBER() OVER (ORDER BY Date DESC)
AS Row, Description, Date FROM LOG)
AS LogWithRowNumbers
WHERE Row >= 11 AND Row <= 20
您應該使用ROWNUMBER()來獲取結果集的記錄數,並在引起原因的位置對其進行過濾。
SELECT * FROM (SELECT ROW_NUMBER() OVER(ORDER BY name) AS
rownum, name , age FROM Table) AS Table1
WHERE rownum >= 2 AND rownum <= 5
----------------------------
rownum | name | age |
----------------------------
2 |John | 25 |
3 |Adam | 23 |
4 |Tom | 19 |
5 |Jame | 22 |
----------------------------
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