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Simplest way to do a recursive self-join?
...nes the ultimate ancestors in your chain, change it as appropriate
UNION ALL
SELECT m.*
FROM mytable m
JOIN q
ON m.parentID = q.PersonID
)
SELECT *
FROM q
By adding the ordering condition, you can preserve the tree order:
WITH q A...
What's the difference between session.Merge and session.SaveOrUpdate?
...e.class);
configuration.setProperty("connection.driver_class","com.mysql.jdbc.Driver");
configuration.setProperty("hibernate.connection.url", "jdbc:mysql://localhost:3306/hibernate");
configuration.setProperty("hibernate.connection.username", "...
How do I auto size a UIScrollView to fit its content
...
for (UIView *view in self.scrollView.subviews) {
contentRect = CGRectUnion(contentRect, view.frame);
}
self.scrollView.contentSize = contentRect.size;
Swift
let contentRect: CGRect = scrollView.subviews.reduce(into: .zero) { rect, view in
rect = rect.union(view.frame)
}
scrollView.c...
Sequelize Unknown column '*.createdAt' in 'field list'
...ize('sequelize_test', 'root', null, {
host: "127.0.0.1",
dialect: 'mysql',
define: {
timestamps: false
}
});
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SQL Server: What is the difference between CROSS JOIN and FULL OUTER JOIN?
...
This is wrong. FULL JOIN ON rows are INNER JOIN ON rows UNION ALL unmatched left table rows null-extended UNION ALL unmatched right table rows null-extended. So FULL JOIN can return M*N rows--possibly greater than both MAX(M,N) & M+N. But anyway the min & max number of row...
How to initialize a struct in accordance with C programming language standards
...ne to use a designated initializer to initialize members of a structure or union as follows:
MY_TYPE a = { .stuff = 0.456, .flag = true, .value = 123 };
It is defined in paragraph 7, section 6.7.8 Initialization of ISO/IEC 9899:1999 standard as:
If a designator has the form
. identifier
t...
What is in your Mathematica tool bag? [closed]
...n their original order, so if you set h = #1& then you get an unsorted Union, like in the examples for Reap. But, it can be used for secondary processing.
As an example of its utility, I've been working with Wannier90 which outputs the spatially dependent Hamiltonian into a file where each lin...
Iterate two Lists or Arrays with one ForEach statement in C#
...
You can use Union or Concat, the former removes duplicates, the later doesn't
foreach (var item in List1.Union(List1))
{
//TODO: Real code goes here
}
foreach (var item in List1.Concat(List1))
{
//TODO: Real code goes here
}
...
How to merge two arrays in JavaScript and de-duplicate items
...
With Underscore.js or Lo-Dash you can do:
console.log(_.union([1, 2, 3], [101, 2, 1, 10], [2, 1]));
<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.15/lodash.min.js"></script>
http://underscorejs.org/#union
http://lodash.com/docs#union
...
Choosing a stand-alone full-text search server: Sphinx or SOLR? [closed]
... Lucene committers.
Sphinx integrates more tightly with RDBMSs, especially MySQL.
Solr can be integrated with Hadoop to build distributed applications
Solr can be integrated with Nutch to quickly build a fully-fledged web search engine with crawler.
Solr can index proprietary formats like Microsoft ...