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What are the main performance differences between varchar and nvarchar SQL Server data types?
...ou are storing URLs which are mostly all base ASCII characters (values 0 - 127) and hence fit into VARCHAR, but sometimes have Unicode characters. Your schema can include the following 3 fields:
...
URLa VARCHAR(2048) NULL,
URLu NVARCHAR(2048) NULL,
URL AS (ISNULL(CONVERT(NVARCHAR([URLa])),...
How can I prevent SQL injection in PHP?
...onnection using PDO is:
$dbConnection = new PDO('mysql:dbname=dbtest;host=127.0.0.1;charset=utf8', 'user', 'password');
$dbConnection->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);
$dbConnection->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
In the above example the error mod...
std::function vs template
...Johan Lundberg
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8
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Under what circumstances is an SqlConnection automatically enlisted in an ambient TransactionScope T
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TriynkoTriynko
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11
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Redis strings vs Redis hashes to represent JSON: efficiency?
...x_ziplist_entries: 512 ).new
=> #<Redis client v4.0.1 for redis://127.0.0.1:6379/0>
> redis.flushdb
=> "OK"
> ap redis.info(:memory)
{
"used_memory" => "529512",
**"used_memory_human" => "517.10K"**,
....
}
=> nil
...
Is there a better way to express nested namespaces in C++ within the header
...
AndyG
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answered Jul 6 '12 at 9:00
peterchenpeterchen
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Why should I use the keyword “final” on a method parameter in Java?
...
127
Yes, excluding anonymous classes, readability and intent declaration it's almost worthless. Ar...
Is a view faster than a simple query?
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Charles BretanaCharles Bretana
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...
Is XSLT worth it? [closed]
...h at startup when configuration is missing</Bug>
<Bug id="127" component="Admin">Error when clicking the Bar button</Bug>
</FixedBugs>
</ReleaseNotes>
And then using XSLT (which transforms the above to DocBook) we end up with nice release notes (PDF or HTM...
Why is the gets function so dangerous that it should not be used?
...hardware. In that case, if hardware is incapable of submitting lines over 127 bytes long it might be justifiable to gets into a 128-byte buffer, though I would think the advantages of being able to specify a shorter buffer when expecting smaller input would more than justify the cost.
...