大约有 46,000 项符合查询结果(耗时:0.0819秒) [XML]

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How to change the name of an iOS app?

...matically change all project-name-related entries and will allow you to de-select some of them, if you want. Press 'RENAME' and Xcode will do the rest. In the meanwhile Xcode may ask you about the option of making a snapshot of the project (it is very recommendable to do so). In addition to renami...
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Hidden Features of SQL Server

...xing table ?''', @Command2 = 'dbcc dbreindex(''?'')', @Command3 = 'select count (*) [?] from ?' Also, sp_MSforeachdb share edited Feb 17 '10 at 2:34 ...
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Entity Framework - Include Multiple Levels of Properties

... For EF 6 using System.Data.Entity; query.Include(x => x.Collection.Select(y => y.Property)) Make sure to add using System.Data.Entity; to get the version of Include that takes in a lambda. For EF Core Use the new method ThenInclude query.Include(x => x.Collection) .ThenIncl...
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“INSERT IGNORE” vs “INSERT … ON DUPLICATE KEY UPDATE”

...int, unique key (u)); mysql> insert into foo (u) values (10); mysql> select * from foo; +----+------+ | id | u | +----+------+ | 1 | 10 | +----+------+ mysql> show create table foo\G CREATE TABLE `foo` ( `id` bigint(20) unsigned NOT NULL AUTO_INCREMENT, `u` int(11) DEFAULT NULL, ...
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Rails find record with zero has_many records associated [duplicate]

..._joins(:photos).where(photos: {id: nil}) which will result in SQL like: SELECT cities.* FROM cities LEFT OUTER JOIN photos ON photos.city_id = city.id WHERE photos.id IS NULL Using includes: City.includes(:photos).where(photos: {id: nil}) will have the same result, but will result in much ug...
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“Go To Definition” in Visual Studio only brings up the Metadata

...n a Web Project in Visual Studio 2008. When I hit F12 (or right-click and select Go To Definition) Visual Studio is consistently going to the Metadata file instead of going to the source. ...
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What's the difference between IQueryable and IEnumerable

...to execute the entire query against the underlying data source (like using SELECT TOP 1 in SQL). See: The .NET Standard Query Operators share | improve this answer | foll...
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Eclipse: Enable autocomplete / content assist

...efault in Eclipse you only have to press Ctrl-space for autocomplete. Then select the desired method and wait 500ms for the javadoc info to pop up. If this doesn't work go to the Eclipse Windows menu -> Preferences -> Java -> Editor -> Content assist and check your settings here ...
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How to add a primary key to a MySQL table?

...le as it is written now, which can be a little confusing when doing simple SELECT * ... – StefanK Apr 12 '19 at 6:45 H...
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MySQL Multiple Joins in one query?

... You can simply add another join like this: SELECT dashboard_data.headline, dashboard_data.message, dashboard_messages.image_id, images.filename FROM dashboard_data INNER JOIN dashboard_messages ON dashboard_message_id = dashboard_messages.id INNER JO...