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Difference between Pig and Hive? Why have both? [closed]
...rforming outer joins but hive does not. But both Hive & PIG can join, order & sort dynamically.
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Oracle TNS names not showing when adding new connection to SQL Developer
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SQL Developer will look in the following location in this order for a tnsnames.ora file
$HOME/.tnsnames.ora
$TNS_ADMIN/tnsnames.ora
TNS_ADMIN lookup key in the registry
/etc/tnsnames.ora ( non-windows )
$ORACLE_HOME/network/admin/tnsnames.ora
LocalMachine\SOFTWARE\ORACLE\ORACLE_HO...
How to convert a String to CharSequence?
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Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
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What's the point of JAXB 2's ObjectFactory classes?
...ple/reference of what (or how complicated) a Schema element needs to be in order for create*() to do something useful? I'm having trouble finding the part of the Schema you're referencing with your JAXB example. If my Schema gets more complicated later, it'd certainly be nice for create* to handle p...
StringIO in Python3
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In order to make examples from here
work with Python 3.5.2, you can rewrite as follows :
import io
data =io.BytesIO(b"1, 2, 3\n4, 5, 6")
import numpy
numpy.genfromtxt(data, delimiter=",")
The reason for the change may be tha...
How do I concatenate two text files in PowerShell?
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For me the cat command runs multiple orders of magnitude longer than the cmd /c command (which runs really quick); thanks for pointing out the option!
– Rob
Aug 13 '14 at 12:23
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ALTER TABLE to add a composite primary key
...t it after you recreate the primary key.
Also, when using composite keys, order is important.
These
1) ALTER TABLE provider ADD PRIMARY KEY(person,place,thing);
and
2) ALTER TABLE provider ADD PRIMARY KEY(person,thing,place);
are not the the same thing.
They both enforce uniqueness on that set ...
When NOT to use yield (return) [duplicate]
...res. For example, I often see this:
public static IEnumerable<T> PreorderTraversal<T>(Tree<T> root)
{
if (root == null) yield break;
yield return root.Value;
foreach(T item in PreorderTraversal(root.Left))
yield return item;
foreach(T item in PreorderTraver...
Can I create a One-Time-Use Function in a Script or Stored Procedure?
...That is not function within a script and may still require permissions. In order to avoid repetitive segments the only option SQL has is WITH statement.
– alex.peter
Dec 6 '19 at 17:38
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Why would one use nested classes in C++?
...lection and Element - bad, because the name "Element" is general enough in order to cause a possible name clash
introduce a namespace someSpecificCollection and declare classes someSpecificCollection::Collection and someSpecificCollection::Element. No risk of name clash, but can it get any more verb...