大约有 47,000 项符合查询结果（耗时：0.0662秒） [XML]
Use variable with TOP in select statement in SQL Server without making it dynamic [duplicate]
...es, in SQL Server 2005 it's possible to use a variable in the top clause.
select top (@top) * from tablename
share
|
improve this answer
|
follow
|
...
Using LIMIT within GROUP BY to get N results per group?
...to get all years into a single column, grouped by id and ordered by rate:
SELECT id, GROUP_CONCAT(year ORDER BY rate DESC) grouped_year
FROM yourtable
GROUP BY id
Result:
-----------------------------------------------------------
| ID | GROUPED_YEAR |...
jQuery UI Tabs - How to Get Currently Selected Tab Index
...answer is there - use ui.index property to get the current index in the tabselect event.....
– redsquare
Nov 5 '09 at 12:27
17
...
Is there any difference between GROUP BY and DISTINCT
...CT and distinct by UNION cause an oracle error, but GROUP BY worked; I was selecting only 1 column from a view and not using any aggregation; I'm still baffled why it required it, but it does confirm there is some difference in the execution. As others point out, it also lets you GROUP BY columns no...
Default text which won't be shown in drop-down list
I have a select which initially shows Select language until the user selects a language. When the user opens the select, I don't want it to show a Select language option, because it's not an actual option.
...
How do I do top 1 in Oracle?
...
If you want just a first selected row, you can:
select fname from MyTbl where rownum = 1
You can also use analytic functions to order and take the top x:
select max(fname) over (rank() order by some_factor) from MyTbl
...
Why does AngularJS include an empty option in select?
...efined in the specification at http://docs.angularjs.org/api/ng.directive:select , I still get an empty option as the first child of select element.
...
How can I select rows with most recent timestamp for each key value?
...r data. Each row has a sensor id, a timestamp, and other fields. I want to select a single row with latest timestamp for each sensor, including some of the other fields.
...
Removing rounded corners from a element in Chrome/Webkit
...sheet for Chrome gives a border-radius of 5px to all the corners of a <select> element. I've tried getting rid of this by applying a radius of 0px through my external stylesheet, as well inline on the element itself; I've tried both border-radius:0px and -webkit-border-radius:0px; and I...
How to Join to first row
...
SELECT Orders.OrderNumber, LineItems.Quantity, LineItems.Description
FROM Orders
JOIN LineItems
ON LineItems.LineItemGUID =
(
SELECT TOP 1 LineItemGUID
FROM LineItems
W...