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updating table rows in postgres using subquery
..._id=subquery.address_id;
This syntax is not standard SQL, but it is much more convenient for this type of query than standard SQL. I believe Oracle (at least) accepts something similar.
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im...
Linq to Entities join vs groupjoin
... say a list of lists. In many cases the select with the parent included is more useful.
Some use cases
1. Producing a flat outer join.
As said, the statement ...
from p in Parent
join c in Child on p.Id equals c.Id into g
select new { Parent = p, Children = g }
... produces a list of parents with c...
What is the difference between CascadeType.REMOVE and orphanRemoval in JPA?
...dress;
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}
Orphan Removal
JPA 2 supports an additional and more aggressive remove cascading mode
which can be specified using the orphanRemoval element of the
@OneToOne and @OneToMany annotations:
@Entity
class Employee {
:
@OneToOne(orphanRemoval=true)
private Addr...
Convert NSArray to NSString in Objective-C
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Extracting the last n characters from a ruby string
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Why is access to the path denied?
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Which is generally best to use — StringComparison.OrdinalIgnoreCase or StringComparison.InvariantCul
...de equivalence rules are complicated, which means using method 1) or 2) is more expensive than OrdinalIgnoreCase. The fact that OrdinalIgnoreCase does not perform any special unicode normalization, means that some strings that render in the same way on a computer screen, will not be considered ident...
How to get error information when HttpWebRequest.GetResponse() fails
...l over both endpoints and would like the receiving end to get a little bit more information. For example, I would like to pass the exception message from server to client. Is this possible using HttpWebRequest and HttpWebResponse?
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How can I remove the search bar and footer added by the jQuery DataTables plugin?
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How can I write a regex which matches non greedy? [duplicate]
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I think It's more clear to say that *? is the non-greedy version of *.
– golopot
Nov 12 '16 at 1:34
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