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What are the uses for Cross Join?
...
If you have a "grid" that you want to populate completely, like size and color information for a particular article of clothing:
select
size,
color
from
sizes CROSS JOIN colors
Maybe you want a table that contains a row for ev...
Why use multiple columns as primary keys (composite primary key)
...nerated (non-intelligent) primary key, for example in this case OrderDetailId. But then you would not always see the relationship as easily. Some folks prefer one way; some prefer the other way.
share
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SQL exclude a column using SELECT * [except columnA] FROM tableA?
...le "SQL column rename" or "SQL column alias". Something like SELECT table1.ID AS table1ID ..., IIRC.
– ToolmakerSteve
Aug 21 '14 at 2:44
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Getting “Skipping JaCoCo execution due to missing execution data file” upon executing JaCoCo
...s to
use syntax for late property evaluation:
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<configuration>
<argLine>@{argLine} -your -extra -arguments</argLine>
</configuration>...
align right in a table cell with CSS
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It depends. I have a paragraph, which is block, inside a table cell (css display: table-cell), and if I give that paragraph a width of 100% it starts to respect text-align right. I assume defining a width isn't always the best thing.
– Costa
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How to find Unused Amazon EC2 Security groups
... find a way to determine orphan security groups so I can clean up and get rid of them. Does anyone know of a way to discover unused security groups.
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How to make a floated div 100% height of its parent?
...t;style>
#outer {
position:absolute;
height:auto; width:200px;
border: 1px solid red;
}
#inner {
position:absolute;
height:100%;
width:20px;
border: 1px solid black;
}
</style>
<div id='outer'>
<div...
Design Pattern for Undo Engine
...this once and it worked very slick. The biggest thing you have to do is avoid the direct use of pointers or references in the model.
Every reference to another object uses some identifier (like an integer). Whenever the object is needed, you lookup the current definition of the object from a table....
How to remove “onclick” with JQuery?
.... with the selector you need.)
// use the "[attr=value]" syntax to avoid syntax errors with special characters (like "$")
$('[id="a$id"]').prop('onclick',null).off('click');
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<a id="a$...
How to call Android contacts list?
I'm making an Android app, and need to call the phone's contact list. I need to call the contacts list function, pick a contact, then return to my app with the contact's name. Here's the code I got on the internet, but it doesnt work.
...