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Remove duplicate rows in MySQL
...
Just for the record if your using InnoDB then you may have an issue with it, there is a known bug about using ALTER IGNORE TABLE with InnoDB databases.
– DarkMantis
Jan 7 '13 at 16:57
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In MySQL, can I copy one row to insert into the same table?
...y = NULL;
INSERT INTO table SELECT * FROM tmptable_1;
DROP TEMPORARY TABLE IF EXISTS tmptable_1;
As a temp table, there should never be more than one record, so you don't have to worry about the primary key. Setting it to null allows MySQL to choose the value itself, so there's no risk of creating...
Associating enums with strings in C#
...st string TheOtherGroup = "CMB";
}
void DoSomething(string groupType)
{
if(groupType == GroupTypes.TheGroup)
{
// Be nice
}
else if (groupType == GroupTypes.TheOtherGroup)
{
// Continue to be nice
}
else
{
// unexpected, throw exception?
}
}
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IE10 renders in IE7 mode. How to force Standards mode?
...ith a HTML5 doctype IE will still place your website in compatibility mode if it's an intranet site.
To ensure that your website always uses the latest standards mode you can either make sure Display intranet sites in Compatibly is turned off. However you have to do this on each machine local to th...
Get OS-level system information
I'm currently building a Java app that could end up being run on many different platforms, but primarily variants of Solaris, Linux and Windows.
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Read and overwrite a file in Python
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If you don't want to close and reopen the file, to avoid race conditions, you could truncate it:
f = open(filename, 'r+')
text = f.read()
text = re.sub('foobar', 'bar', text)
f.seek(0)
f.write(text)
f.truncate()
f.close()
Th...
How can I round a number in JavaScript? .toFixed() returns a string?
...le purpose of converting a number to a string, formatting it using the specified number of decimals. The reason it returns a string is because it's supposed to return a string, and if it was named toStringFixed instead, OP wouldn't be surprised at the results. The only issue here is that OP expected...
JavaScript validation for empty input field
...wer_c"].value;
var d = document.forms["Form"]["answer_d"].value;
if (a == null || a == "", b == null || b == "", c == null || c == "", d == null || d == "") {
alert("Please Fill All Required Field");
return false;
}
}
</script>
<form method="post" name="F...
Matrix Transpose in Python
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if you're going to iterate through the results, izip from itertools can save memory for large arrays.
– Antony Hatchkins
Mar 28 '13 at 8:38
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How to use `string.startsWith()` method ignoring the case?
...The big problem here is the performance. For small Strings no problem, but if you have a big one... I mean... Do you really will do a toUpperCase in a 1mb String just to compare 4-10 inicial characters?
– Dyorgio
Apr 7 '16 at 16:52
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