大约有 40,000 项符合查询结果(耗时:0.0326秒) [XML]

https://stackoverflow.com/ques... 

How to select/get drop down option in Selenium 2

...converting my selenium 1 code to selenium 2 and can't find any easy way to select a label in a drop down menu or get the selected value of a drop down. Do you know how to do that in Selenium 2? ...
https://stackoverflow.com/ques... 

jQuery remove options from select

I have a page with 5 selects that all have a class name 'ct'. I need to remove the option with a value of 'X' from each select while running an onclick event. My code is: ...
https://stackoverflow.com/ques... 

Rails raw SQL example

... You can do this: sql = "Select * from ... your sql query here" records_array = ActiveRecord::Base.connection.execute(sql) records_array would then be the result of your sql query in an array which you can iterate through. ...
https://stackoverflow.com/ques... 

Firefox ignores option selected=“selected”

If you change a dropdown and refresh the page, Firefox seems to ignore the selected attribute. 20 Answers ...
https://stackoverflow.com/ques... 

postgresql list and order tables by size

... select table_name, pg_relation_size(quote_ident(table_name)) from information_schema.tables where table_schema = 'public' order by 2 This shows you the size of all tables in the schema public if you have multiple schemas, y...
https://stackoverflow.com/ques... 

Check if a row exists, otherwise insert

... I assume a single row for each flight? If so: IF EXISTS (SELECT * FROM Bookings WHERE FLightID = @Id) BEGIN --UPDATE HERE END ELSE BEGIN -- INSERT HERE END I assume what I said, as your way of doing things can overbook a flight, as it will insert a new row when there are 1...
https://stackoverflow.com/ques... 

Eclipse does not highlight matching variables

...y: window > preferences > java > editor > mark occurrences Select all options available there. Also go to: Preferences > General > Editors > Text Editors > Annotations Compare the settings for 'Occurrences' and 'Write Occurrences' Make sure that you don't have the 'T...
https://stackoverflow.com/ques... 

Finding duplicate values in MySQL

... Do a SELECT with a GROUP BY clause. Let's say name is the column you want to find duplicates in: SELECT name, COUNT(*) c FROM table GROUP BY name HAVING c > 1; This will return a result with the name value in the first colum...
https://stackoverflow.com/ques... 

Should MySQL have its timezone set to UTC?

...the timezone will not change the stored datetime or timestamp, but it will select a different datetime from timestamp columns Warning! UTC has leap seconds, these look like '2012-06-30 23:59:60' and can be added randomly, with 6 months prior notice, due to the slowing of the earths rotation GMT con...
https://stackoverflow.com/ques... 

what is the difference between GROUP BY and ORDER BY in sql

... SUM, COUNT, AVG, etc). TABLE: ID NAME 1 Peter 2 John 3 Greg 4 Peter SELECT * FROM TABLE ORDER BY NAME = 3 Greg 2 John 1 Peter 4 Peter SELECT Count(ID), NAME FROM TABLE GROUP BY NAME = 1 Greg 1 John 2 Peter SELECT NAME FROM TABLE GROUP BY NAME HAVING Count(ID) > 1 = Peter ...