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How to select all records from one table that do not exist in another table?
...l, ok i only want that are null. This way you now have all rows in A that didn't have a match In B
– Muhammad Umer
Mar 6 '18 at 18:02
7
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How can I scale the content of an iframe?
... on Opera and Safari if you change the CSS to:
<style>
#wrap { width: 600px; height: 390px; padding: 0; overflow: hidden; }
#frame { width: 800px; height: 520px; border: 1px solid black; }
#frame {
-ms-zoom: 0.75;
-moz-transform: scale(0.75);
-moz-transform...
Why do most fields (class members) in Android tutorial start with `m`?
...
This notation comes from AOSP (Android Open Source Project) Code Style Guidelines for Contributors:
Follow Field Naming Conventions
Non-public, non-static field names
start with m.
Static field names start with s.
Other fields start with a low...
Oracle JDBC ojdbc6 Jar as a Maven Dependency
... to your local repository.
Maven syntax:
<dependency>
<groupId>com.oracle</groupId>
<artifactId>ojdbc6</artifactId>
<version>11.2.0.3</version>
</dependency>
...
<repositories>
<repository>
<id>codelds</id&...
How to name factory like methods?
...hat comprises many steps and possibly a lot of disk activity. However, the idea of a Factory "building" something is a sensible idea - especially in cases where a complex data-structure is built, or many separate pieces of information are combined in some way.
'Generate' to me implies a calculation ...
Using “this” with class name
I am doing Android programming and was learning about Intents, when I saw a constructor that, to my C# trained mind, seemed funky. The call was:
...
How do I convert from int to String?
...n@lucifer:~$ cat TestClass.java
public class TestClass {
public static void main(String[] args) {
int i = 5;
String strI = "" + i;
}
}
simon@lucifer:~$ javac TestClass.java && javap -c TestClass
Compiled from "TestClass.java"
public class TestClass extends java.lang.Object{
publi...
mongodb find by multiple array items
...
This helped me too, I needed it to find an object ID in an array, and where something like $in: [ ObjectId("4f9f2c336b810d0cf0000017") ] failed, $in: [ "4f9f2c336b810d0cf0000017" ] worked
– jbnunn
May 3 '12 at 15:43
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What is the difference between class and instance attributes?
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Beyond performance considerations, there is a significant semantic difference. In the class attribute case, there is just one object referred to. In the instance-attribute-set-at-instantiation, there can be multiple objects referred to. For inst...
How can I clear an HTML file input with JavaScript?
...l lost your handlers, like this one: var inputPhoto = document.getElementById('photoInput'); inputPhoto.addEventListener('change', handler_file, false);
– Rui Martins
Jun 22 '17 at 17:13
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