大约有 9,000 项符合查询结果(耗时:0.0278秒) [XML]

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Hibernate Criteria returns children multiple times with FetchType.EAGER

...he OrderTransaction, it has to return the same amount of results a regular sql join will return So actually it should apear multiple times. this is explained very well by the author (Gavin King) himself here: It both explains why, and how to still get distinct results Also mentioned in the Hiber...
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Difference between clustered and nonclustered index [duplicate]

...- INT or BIGINT as your default option. By default, the primary key on a SQL Server table is also used as the clustering key - but that doesn't need to be that way! One rule of thumb I would apply is this: any "regular" table (one that you use to store data in, that is a lookup table etc.) shoul...
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List of all index & index columns in SQL Server DB

How do I get a list of all index & index columns in SQL Server 2005+? The closest I could get is: 30 Answers ...
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Linux 进程卡住了怎么办? - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

Linux 进程卡住了怎么办?howto-solve-d-status-process在我们使用 Linux 系统时,如果网络或者磁盘等 I O 出问题,会发现进程卡住了,即使用 kill -9 也无法杀掉进程,很多常用的调试工具,比如 strace, pstack 等也都失灵了 在我们使用...
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How to strip all non-alphabetic characters from string in SQL Server?

... I knew that SQL was bad at string manipulation, but I didn't think it would be this difficult. Here's a simple function to strip out all the numbers from a string. There would be better ways to do this, but this is a start. CREATE FUNCT...
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How to re-create database for Entity Framework?

...project. 4) Delete Migrations folder by right click and delete. 5) Go to SQL Server Management Studio, make sure the DB for this project is not there, otherwise delete it. 6) Go to Package Manager Console in Visual Studio and type: Enable-Migrations -Force Add-Migration init Update-Database 7...
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SQL Server: SELECT only the rows with MAX(DATE)

I have a table of data (the db is MSSQL): 11 Answers 11 ...
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SQL DELETE with INNER JOIN

... Here is the error i got : [Err] 1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'spawnlist FROM db.root.spawnlist s INNER JOIN db.root.npc n ON s.npc_t' at line 1 [Err] DELETE l2revo.root.spawnlist...
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Select values from XML field in SQL Server 2008

... SQL Server 2008 R2 Express, returned me this error with your solution: The XQuery syntax '/function()' is not supported.; On the other hand @Remus Rusanu seems to do it :) – RMiranda Apr...
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How can I SELECT rows with MAX(Column value), DISTINCT by another column in SQL?

... The fastest MySQL solution, without inner queries and without GROUP BY: SELECT m.* -- get the row that contains the max value FROM topten m -- "m" from "max" LEFT JOIN topten b -- "b" from "bi...