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How update the _id of one MongoDB Document?

I want update an _id field of one document. I know it's not a really good pratice. But with some technical reason, I need update it. If I try to update it I get: ...
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Bundle ID Suffix? What is it?

I'm new to the iPhone submission process. Apple asks for the Bundle ID Suffix. What is this? Not sure what to put here and what the significance of it is. ...
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Cannot truncate table because it is being referenced by a FOREIGN KEY constraint?

... DELETE FROM TABLENAME DBCC CHECKIDENT ('DATABASENAME.dbo.TABLENAME',RESEED, 0) Note that this isn't probably what you'd want if you have millions+ of records, as it's very slow. s...
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MySQL, update multiple tables with one query

... In case, we increase the number of books in a particular order with Order.ID = 1002 in Orders table then we also need to reduce that the total number of books available in our stock by the same number in Books table. UPDATE Books, Orders SET Orders.Quantity = Orders.Quantity + 2, Books.InStock ...
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jQuery: select all elements of a given class, except for a particular Id

... Use the :not selector. $(".thisclass:not(#thisid)").doAction(); If you have multiple ids or selectors just use the comma delimiter, in addition: (".thisclass:not(#thisid,#thatid)").doAction(); ...
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SQL Server indexes - ascending or descending, what difference does it make?

...y Optimiser's point of view. For the table definition CREATE TABLE T1( [ID] [int] IDENTITY NOT NULL, [Filler] [char](8000) NULL, PRIMARY KEY CLUSTERED ([ID] ASC)) The Query SELECT TOP 10 * FROM T1 ORDER BY ID DESC Uses an ordered scan with scan direction BAC...
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Migration: Cannot add foreign key constraint

...ma::create('priorities', function($table) { $table->increments('id', true); $table->integer('user_id')->unsigned(); $table->string('priority_name'); $table->smallInteger('rank'); $table->text('class'); $table->timestamps('timecreat...
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ActiveRecord.find(array_of_ids), preserving order

When you do Something.find(array_of_ids) in Rails, the order of the resulting array does not depend on the order of array_of_ids . ...
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RESTful on Play! framework

...ept header for content negotiation. First the routes file: GET /user/{id} Application.user POST /user/ Application.createUser PUT /user/{id} Application.updateUser DELETE /user/{id} Application.deleteUser You don't specify any content ty...
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Efficiently convert rows to columns in sql server

... from yourtable group by ColumnName, id order by id FOR XML PATH(''), TYPE ).value('.', 'NVARCHAR(MAX)') ,1,1,'') set @query = N'SELECT ' + @cols + N' from ( select value, Column...