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What is the proper way to re-attach detached objects in Hibernate?
...k);
});
And Hibernate is going to execute the following SQL statements:
SELECT
b.id,
b.author AS author2_0_,
b.isbn AS isbn3_0_,
b.title AS title4_0_
FROM
book b
WHERE
b.id = 1
-- Merging the Book entity
UPDATE
book
SET
author = 'Vlad Mihalcea',
isbn = '978-9...
Find column whose name contains a specific string
...
# select columns containing 'spike'
df.filter(like='spike', axis=1)
You can also select by name, regular expression. Refer to: pandas.DataFrame.filter
...
How can I auto increment the C# assembly version via our CI platform (Hudson)?
...d an existing item to you project (wait... read on before adding the file)
Select the file and before you click Add, click the dropdown next to the add button and select "Add As Link".
Repeat steps 5 and 6 for all existing and new projects in the solution
When you add the file as a link, it stores...
DateTime2 vs DateTime in SQL Server
...= '5/5/2010 23:59:59.999'
declare @d3 datetime = '5/5/2010 23:59:59.997'
select @d1 as 'IAmMay6BecauseOfRounding', @d2 'May5', @d3 'StillMay5Because2msEarlier'
Avoiding this implicit rounding is a significant reason to move to DateTime2. Implicit rounding of dates clearly causes confusion:
St...
What is a software framework? [closed]
...an abstraction in which common code providing generic functionality can be selectively overridden or specialized by user code providing specific functionality. Frameworks are a special case of software libraries in that they are reusable abstractions of code wrapped in a well-defined Application pro...
SSMS插件开发指南 - C/C++ - 清泛网 - 专注C/C++及内核技术
...nt;
if (document != null)
{
TextSelection selection = (TextSelection)document.Selection;
selection.Insert(text, (Int32)EnvDTE.vsInsertFlags.vsInsertFlagsContainNewText);
}
}
#region 私有方法
...
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
...
Call method in directive controller from other controller
...ad of calling success(msg) in the html you would call sucess(name, msg) to select the directive with the correct name.
– lanoxx
Dec 8 '14 at 14:42
5
...
#1071 - Specified key was too long; max key length is 1000 bytes
... the best prefix length for a given column? Here's a method to find out:
SELECT
ROUND(SUM(LENGTH(`menu_link`)<10)*100/COUNT(`menu_link`),2) AS pct_length_10,
ROUND(SUM(LENGTH(`menu_link`)<20)*100/COUNT(`menu_link`),2) AS pct_length_20,
ROUND(SUM(LENGTH(`menu_link`)<50)*100/COUNT(`menu_...
Qt events and signal/slots
...lated?
An idle main loop (Qt’s for example) is usually “stuck” in a select() call of the operating system. That call makes the application “sleep”, while it passes a bunch of sockets or files or whatever to the kernel asking for: if something changes on these, let the select() call return...