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Change type of varchar field to integer: “cannot be cast automatically to type integer”
...ble PgAdmin-III isn't showing you the full error. Here's what happens if I test it in psql on PostgreSQL 9.2:
=> CREATE TABLE test( x varchar );
CREATE TABLE
=> insert into test(x) values ('14'), (' 42 ');
INSERT 0 2
=> ALTER TABLE test ALTER COLUMN x TYPE integer;
ERROR: column "x" cann...
How to Generate unique file names in C#
...too, and doesn't suffer from race conditions.
For example, if you pass it test.txt, it will attempt to create files in this order:
test.txt
test (2).txt
test (3).txt
etc. You can specify the maximum attempts or just leave it at the default.
Here's a complete example:
class Program
{
stati...
How to display HTML tags as plain text [duplicate]
... may use htmlspecialchars()
<?php
$new = htmlspecialchars("<a href='test'>Test</a>", ENT_QUOTES);
echo $new; // &lt;a href=&#039;test&#039;&gt;Test&lt;/a&gt;
?>
share
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...
How to make a valid Windows filename from an arbitrary string?
...n are invalid). Be careful when naming files with ".", for example:
echo "test" > .test.
Will generate a file named ".test"
Lastly, if you really want to do things correctly, there are some special file names you need to look out for. On Windows you can't create files named:
CON, PRN, AUX, ...
TypeError: 'str' does not support the buffer interface
...
I tested it with ActiveState Python 3.1 and 3.2. On my machine it works in both.
– Michał Niklas
Mar 29 '11 at 11:21
...
MVC (Laravel) where to add logic
... Interesting and valid thoughts. But I'm curious - how do you unit-test your business logic if it is tied to models which are tied to Eloquent, which is tied to database?
– JustAMartin
Aug 12 '15 at 6:28
...
How to use Regular Expressions (Regex) in Microsoft Excel both in-cell and loops
...False
.Pattern = strPattern
End With
If regEx.Test(strInput) Then
MsgBox (regEx.Replace(strInput, strReplace))
Else
MsgBox ("Not matched")
End If
End If
End Sub
Example 2: Run as an in-cell function
This example is the sam...
How to write :hover condition for a:before and a:after?
... span {
font-size:12px;
}
a {
color:green;
}
.test1>a:hover span {
display:none;
}
.test1>a:hover:before {
color:red;
content:"Apple";
}
</style>
</head>
<body>
<div class="test1">
<a href="#"&...
How to identify unused css definitions
...ten a windows application to find and remove unused CSS classes. I haven't tested it but from the description, you have to provide the path of your html files and one CSS file. The program will then list the unused CSS selectors. From the screenshot, it looks like there is no way to export this list...
Cannot drop database because it is currently in use
...
select * from sys.sysprocesses where dbid = DB_ID('Test')
(Replace 'Test' with the name of the database you are trying to drop)
This will tell you which processes are using it.
If you still want to force drop then, the ultimate approach is:
USE master;
GO
ALTER DATABASE T...