大约有 47,000 项符合查询结果(耗时:0.0419秒) [XML]

https://stackoverflow.com/ques... 

INSERT IGNORE” vs “INSERT … ON DUPLICATE KEY UPDATE”

While executing an INSERT statement with many rows, I want to skip duplicate entries that would otherwise cause failure. After some research, my options appear to be the use of either: ...
https://stackoverflow.com/ques... 

Automatically deleting related rows in Laravel (Eloquent ORM)

When I delete a row using this syntax: 13 Answers 13 ...
https://stackoverflow.com/ques... 

rails 3 validation on uniqueness on multiple attributes

... In Rails 2, I would have written: validates_uniqueness_of :zipcode, :scope => :recorded_at In Rails 3: validates :zipcode, :uniqueness => {:scope => :recorded_at} For multiple attributes: validates :zipcode, :...
https://stackoverflow.com/ques... 

Socket.IO - how do I get a list of connected sockets/clients?

I'm trying to get a list of all the sockets/clients that are currently connected. 26 Answers ...
https://stackoverflow.com/ques... 

Is there an auto increment in sqlite?

I am trying to create a table with an auto-incrementing primary key in Sqlite3 . I am not sure if this is really possible, but I am hoping to only have to designate the other fields. ...
https://stackoverflow.com/ques... 

Sequelize.js delete query?

Is there a way to write a delete/deleteAll query like findAll? 9 Answers 9 ...
https://stackoverflow.com/ques... 

Nested attributes unpermitted parameters

...son . I want a form that can create the Bill and its children Dues all in one page. I am trying to create a form using nested attributes, similar to ones in this Railscast . ...
https://stackoverflow.com/ques... 

Multiline TextView in Android?

I did like below in xml 18 Answers 18 ...
https://stackoverflow.com/ques... 

How to change identity column values programmatically?

... You need to set identity_insert YourTable ON Then delete your row and reinsert it with different identity. Once you have done the insert don't forget to turn identity_insert off set identity_insert YourTable OFF ...
https://stackoverflow.com/ques... 

How to bring view in front of everything?

...m have animations and because of the animations some of the widgets are moving (translating) one over another. For example the text view is moving over some buttons . . . ...