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What are the differences between the different saving methods in Hibernate?
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So in case of detached object, merge will trigger a select whereas update will not ?
– Gab
Mar 17 '14 at 15:44
1
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Error “The connection to adb is down, and a severe error has occurred.”
... I solved my issue. I go to Task Manager in windows7 -> processes -> selected the adb.exe -> End Process. After that I go to cmd prompt and type adb start-server. This time adb statred succefully. I run eclipe and it was showing no error.
– Nishant
Apr...
AngularJS - How to use $routeParams in generating the templateUrl?
...will actually work, but what about applying a controller for each template selected? Using this method will leave you with only one "master" controller: "RouteController"
– Yaniv Efraim
Dec 31 '13 at 17:23
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How do I create test and train samples from one dataframe with pandas?
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scikit learn's train_test_split is a good one.
from sklearn.model_selection import train_test_split
train, test = train_test_split(df, test_size=0.2)
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How to catch SQLServer timeout exceptions
...= sql.CreateCommand();
cmd.CommandText = "DECLARE @i int WHILE EXISTS (SELECT 1 from sysobjects) BEGIN SELECT @i = 1 END";
cmd.ExecuteNonQuery(); // This line will timeout.
cmd.Dispose();
sql.Close();
}
catch (SqlException ex)
{
if (ex.Number == -2) {
Console.WriteLine (...
Mysql adding user for remote access
... that you have to create or update a user. look for all your mysql users:
SELECT user,password,host FROM user;
as soon as you got your user set up you should be able to connect like this:
mysql -h localhost -u gmeier -p
hope it helps
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Array or List in Java. Which is faster?
...;std::string>, although copying by value without a pointer as such, the character arrays will form an object for string (and these will not usually be shared).
If this particular code is really performance-sensitive, you could create a single char[] array (or even byte[]) for all the characters ...
How to open a Bootstrap modal window using jQuery?
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Just call the modal method(without passing any parameters) using jQuery selector.
Here is example:
$('#modal').modal();
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follow
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How to find a deleted file in the project commit history?
...c 'full/path/to/MyFile.js' did not match any file(s) known to git.`
Just select the preceding (append a caret) commit:
> git checkout bd8374c^ -- full/path/to/MyFile.js
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GROUP_CONCAT comma separator - MySQL
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Query to achieve your requirment
SELECT id,GROUP_CONCAT(text SEPARATOR ' ') AS text FROM table_name group by id;
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