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PostgreSQL DISTINCT ON with different ORDER BY
...approaches:
The general solution that should work in most DBMSs:
SELECT t1.* FROM purchases t1
JOIN (
SELECT address_id, max(purchased_at) max_purchased_at
FROM purchases
WHERE product_id = 1
GROUP BY address_id
) t2
ON t1.address_id = t2.address_id AND t1.purchased_at = t2.max_pur...
Copying text with color from Notepad++
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190
There's a plugin called NppExport that does just that in a couple of available formats. If you...
WPF Timer Like C# Timer
....Tick += dispatcherTimer_Tick;
dispatcherTimer.Interval = new TimeSpan(0,0,1);
dispatcherTimer.Start();
private void dispatcherTimer_Tick(object sender, EventArgs e)
{
// code goes here
}
More on the DispatcherTimer can be found here
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Convert INT to VARCHAR SQL
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Use the convert function.
SELECT CONVERT(varchar(10), field_name) FROM table_name
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how to view the contents of a .pem certificate
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143
Use the -printcert command like this:
keytool -printcert -file certificate.pem
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Add legend to ggplot2 line plot
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edited Jan 30 '18 at 21:06
Gregor Thomas
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How do I find the last occurrence of a substring in an NSString?
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How can I print variable and string on same line in Python?
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17 Answers
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ARC and bridged cast
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215
I agree that the description is confusing. Since I just grasped them, I'll try to summarize:
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NUnit vs. xUnit
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135
At the time of writing this answer the latest NUnit version is v3.5 and xUnit.net is v2.1.
Bo...