大约有 48,000 项符合查询结果(耗时:0.0236秒) [XML]

https://stackoverflow.com/ques... 

How to ensure a form field is submitted when it is disabled?

I have a select form field that I want to mark as "readonly", as in the user cannot modify the value, but the value is still submitted with the form. Using the disabled attribute prevents the user from changing the value, but does not submit the value with the form. ...
https://stackoverflow.com/ques... 

jQuery get value of select onChange

I was under the impression that I could get the value of a select input by doing this $(this).val(); and applying the onchange parameter to the select field. ...
https://stackoverflow.com/ques... 

UITableview: How to Disable Selection for Some Rows but Not Others

... able to click it at all) The table contains two groups. I want to disable selection for the first group only but not the second group. Clicking the first row of second group navigates to my tube player view . ...
https://stackoverflow.com/ques... 

How to use index in select statement?

... If you want to test the index to see if it works, here is the syntax: SELECT * FROM Table WITH(INDEX(Index_Name)) The WITH statement will force the index to be used. share | improve this answ...
https://stackoverflow.com/ques... 

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. ...
https://stackoverflow.com/ques... 

ORA-00979 not a group by expression

... You must put all columns of the SELECT in the GROUP BY or use functions on them which compress the results to a single value (like MIN, MAX or SUM). A simple example to understand why this happens: Imagine you have a database like this: FOO BAR 0 A 0 ...
https://stackoverflow.com/ques... 

Add a number to each selection in Sublime Text 2, incremented once per selection

... M represents the step size which will be added to the index for each selection. P must be > 0 and will be used to pad the index with leading zeroes. share | improve this answer ...
https://stackoverflow.com/ques... 

SQL Server query - Selecting COUNT(*) with DISTINCT

... Count all the DISTINCT program names by program type and push number SELECT COUNT(DISTINCT program_name) AS Count, program_type AS [Type] FROM cm_production WHERE push_number=@push_number GROUP BY program_type DISTINCT COUNT(*) will return a row for each unique count. What you want is C...
https://stackoverflow.com/ques... 

How to copy a row and insert in same table with a autoincrement field in MySQL?

... Use INSERT ... SELECT: insert into your_table (c1, c2, ...) select c1, c2, ... from your_table where id = 1 where c1, c2, ... are all the columns except id. If you want to explicitly insert with an id of 2 then include that in your INSER...
https://stackoverflow.com/ques... 

Sql Server equivalent of a COUNTIF aggregate function

...u could use a SUM (not COUNT!) combined with a CASE statement, like this: SELECT SUM(CASE WHEN myColumn=1 THEN 1 ELSE 0 END) FROM AD_CurrentView Note: in my own test NULLs were not an issue, though this can be environment dependent. You could handle nulls such as: SELECT SUM(CASE WHEN ISNULL(myC...