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Removing duplicate rows from table in Oracle
...gentid, class , status, terminationdate
order by rowid) rn
from t)
where rn <> 1);
(fixed the missing parenthesis)
share
|
...
How to enable local network users to access my WAMP sites?
....
#
# Require all granted
# onlineoffline tag - don't remove
Order Deny,Allow
Deny from all
Allow from 127.0.0.1
Allow from ::1
Allow from localhost
</Directory>
Now assuming your local network subnet uses the address range 192.168.0.?
Add this line after All...
Remove duplicate values from JS array [duplicate]
...
}
This chunk of ugly code does the same as the snippet #3 above, but an order of magnitude faster (as of 2017 it's only twice as fast - JS core folks are doing a great job!)
function uniq(a) {
var seen = {};
return a.filter(function(item) {
return seen.hasOwnProperty(item)...
Memcached vs. Redis? [closed]
... can happen if you serialize stale data).
Lists (commands)
Redis lists are ordered collections of strings. They are optimized for inserting, reading, or removing values from the top or bottom (aka: left or right) of the list.
Redis provides many commands for leveraging lists, including commands to p...
Remove redundant paths from $PATH variable
...
Here is a one line code that cleans up the PATH
It does not disturb the order of the PATH, just removes duplicates
Treats : and empth PATH gracefully
No special characters used, so does not require escape
Uses /bin/awk so it works even when PATH is broken
export PATH="$(echo "$PATH" |/bi...
Turning a Comma Separated string into individual rows
... String > ''
)
SELECT
SomeID,
OtherID,
DataItem
FROM tmp
ORDER BY SomeID
-- OPTION (maxrecursion 0)
-- normally recursion is limited to 100. If you know you have very long
-- strings, uncomment the option
Output
SomeID | OtherID | DataItem
--------+---------+----------
1 ...
What are enums and why are they useful?
...tants, which may override methods).
Implementing an interface (or more) in order to not bind the client code to the enum (which should only provide a set of default implementations).
The simplest example would be a set of Comparator implementations:
enum StringComparator implements Comparator<...
Best practices for API versioning? [closed]
...e object, and you have versioned your various objects (customers are v3.0, orders are v2.0, and shipto object is v4.2). Here is the nasty URL you must supply in the client:
(Another reason why version in the URL sucks)
http://company.com/api/v3.0/customer/123/v2.0/orders/4321/
...
What is the best way to solve an Objective-C namespace collision?
...
This is gross, but you could use distributed objects in order to keep one of the classes only in a subordinate programs address and RPC to it. That will get messy if you are passing a ton of stuff back and forth (and may not be possible if both class are directly manipulating view...
Why use ICollection and not IEnumerable or List on many-many/one-many relationships?
...operties in Entity Framework come with change tracking and are proxies. In order for the dynamic proxy to be created as a navigation property, the virtual type must implement ICollection.
A navigation property that represents the "many" end of a relationship must return a type that implements IC...