大约有 46,000 项符合查询结果(耗时:0.0491秒) [XML]

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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: ...
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How to delete selected text in the vi editor

I am using PuTTY and the vi editor. If I select five lines using my mouse and I want to delete those lines, how can I do that? ...
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How to remove leading and trailing whitespace in a MySQL field?

...d the use case before using this solution: trim does not work while doing select query This works select replace(name , ' ','') from test; While this doesn't select trim(name) from test; share | ...
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How do you create a random string that's suitable for a session ID in PostgreSQL?

...sion verification using PostgreSQL. I know I can get a random number with SELECT random() , so I tried SELECT md5(random()) , but that doesn't work. How can I do this? ...
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Combining “LIKE” and “IN” for SQL Server [duplicate]

... Effectively, the IN statement creates a series of OR statements... so SELECT * FROM table WHERE column IN (1, 2, 3) Is effectively SELECT * FROM table WHERE column = 1 OR column = 2 OR column = 3 And sadly, that is the route you'll have to take with your LIKE statements SELECT * FROM tabl...
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Number of rows affected by an UPDATE in PL/SQL

... block, this can be achieved. ... If anyone has a solution to use it in a SELECT Command, I would be interested. share | improve this answer | follow | ...
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SQL variable to hold list of integers

...e @listOfIDs table (id int); insert @listOfIDs(id) values(1),(2),(3); select * from TabA where TabA.ID in (select id from @listOfIDs) or declare @listOfIDs varchar(1000); SET @listOfIDs = ',1,2,3,'; --in this solution need put coma on begin and end select * from TabA where charindex(',' + C...
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Linq code to select one item

I find myself writing a lot of code like this to select one item that matches 7 Answers ...
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How important is the order of columns in indexes?

I've heard that you should put columns that will be the most selective at the beginning of the index declaration. Example: ...
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Fastest Way to Find Distance Between Two Lat/Long Points

...ate a SPATIAL index on these points Use MBRContains() to find the values: SELECT * FROM table WHERE MBRContains(LineFromText(CONCAT( '(' , @lon + 10 / ( 111.1 / cos(RADIANS(@lon))) , ' ' , @lat + 10 / 111.1 , ',' , @lon - 10 / ( 111.1 / cos(RADI...