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Difference between float and decimal data type
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This is what I found when I had this doubt.
mysql> create table numbers (a decimal(10,2), b float);
mysql> insert into numbers values (100, 100);
mysql> select @a := (a/3), @b := (b/3), @a * 3, @b * 3 from numbers \G
*************************** 1. row *************************...
What does principal end of an association means in 1:1 relationship in Entity framework
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@Ladislav, I need to make two independant tables that both have an optional reference to each other (one to one), I want them both to have their own PKs each, how is this possible? I posted a separate question.
– Shimmy Weitzhandler
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Is < faster than
...is "borrowed" bit was usually referred to as the carry bit and would be testable by a branch instruction. A second bit called the zero bit would be set if the subtraction were identically zero which implied equality.
There were usually at least two conditional branch instructions, one to branch on ...
What are the pros and cons of performing calculations in sql vs. in your application
shopkeeper table has following fields:
13 Answers
13
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How to make join queries using Sequelize on Node.js
...sted, but what it does is basically just aliasing all columns of the users table to make sure they are placed into the correct model when returned and not mixed up with the posts model
Other than that you'll notice that it does a JOIN instead of selecting from two tables, but the result should be t...
The JPA hashCode() / equals() dilemma
...ness of the business id in the database. Why having THREE indexes for each table in the database then?
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How do I expire a PHP session after 30 minutes?
...>
<html>
<form name="form1" method="post">
<table>
<tr>
<td>Username</td>
<td><input type="text" name="text"></td>
</tr>
<tr>
<td&g...
Android static object lifecycle
...tarts a process and assigns it a unique process id and allocates a process table.A process start an instance of DVM(Dalvik VM); Each application runs inside a DVM.
A DVM manages class loading unloading, instance lifecycle, GC etc.
Lifetime of a static variable: A static variable comes into existenc...
PHP: Convert any string to UTF-8 without knowing the original character set, or at least try
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Check to make sure the collation you have defined on the table/column is UTF-8 also.
– Alexey Gerasimov
Nov 15 '11 at 12:33
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Knight's Shortest Path on Chessboard
...tance(x,y)+'</td>';
}
html += '</tr>';
}
html = '<table>'+html+'</table>';
$body.append(html);
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
Note: The jQuery used for only illustration, for code see dis...