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T-SQL: Deleting all duplicate rows but keeping one [duplicate]
...VER Clause. It goes a little something like this:
WITH cte AS (
SELECT[foo], [bar],
row_number() OVER(PARTITION BY foo, bar ORDER BY baz) AS [rn]
FROM TABLE
)
DELETE cte WHERE [rn] > 1
Play around with it and see what you get.
(Edit: In an attempt to be helpful, someone edited the ...
Static constant string (class member)
...ible, but you have far more options and are much less likely to write some fool things like "magic" == A::RECTANGLE only to compare their address...
– Matthieu M.
Oct 14 '09 at 14:24
...
What is an MvcHtmlString and when should I use it?
...T 4 introduces a new code nugget syntax <%: %>. Essentially, <%: foo %> translates to <%= HttpUtility.HtmlEncode(foo) %>. The team is trying to get developers to use <%: %> instead of <%= %> wherever possible to prevent XSS.
However, this introduces the problem that ...
How to list branches that contain a given commit?
... Note: When your commit sha is the most recent commit on the master/foo branch (HEAD)... you can't do an A..B commit range, just dont use a range like so:: git log HEAD --oneline -1 > 82c12a9 (HEAD, origin/remote-branch-name, origin/master, origin/dev, origin/HEAD, master, dev) commit mess...
Groovy: what's the purpose of “def” in “def x = 0”?
...l.* automatically
// but not java.nio.*
import java.nio.channels.*
class Foo {
public void bar() {
FileChannel channel = new FileInputStream('Test.groovy').getChannel()
println channel.toString()
}
}
new Foo().bar()
e.g. But here I can just 'wing it' as long as everythin...
Node.js check if file exists
...ter a minute search try this :
var path = require('path');
path.exists('foo.txt', function(exists) {
if (exists) {
// do something
}
});
// or
if (path.existsSync('foo.txt')) {
// do something
}
For Node.js v0.12.x and higher
Both path.exists and fs.exists have been de...
IN vs OR in the SQL WHERE Clause
... you want to know the performance difference between the following:
WHERE foo IN ('a', 'b', 'c')
WHERE foo = 'a' OR foo = 'b' OR foo = 'c'
According to the manual for MySQL if the values are constant IN sorts the list and then uses a binary search. I would imagine that OR evaluates them one by on...
Is there something like Annotation Inheritance in java?
...value = {ElementType.TYPE})
@Vehicle
public @interface Car {
}
@Car
class Foo {
}
You can then check if a class is annotated with Vehicle using Spring's AnnotationUtils:
Vehicle vehicleAnnotation = AnnotationUtils.findAnnotation (Foo.class, Vehicle.class);
boolean isAnnotated = vehicleAnnotation...
How to compute the similarity between two text documents?
...swered Jan 17 '12 at 15:54
Fred FooFred Foo
317k6464 gold badges662662 silver badges785785 bronze badges
...
Only using @JsonIgnore during serialization, but not deserialization
...oreProperties(allowSetters = true, value = {"bar"})
class Pojo{
String foo;
String bar;
}
Both foo and bar are populated in the object, but only foo is written into a response body.
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