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Entity Framework: There is already an open DataReader associated with this Command
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17 Answers
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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...
What is the purpose of the “Prefer 32-bit” setting in Visual Studio and how does it actually work?
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221
Microsoft has a blog entry What AnyCPU Really Means As Of .NET 4.5 and Visual Studio 11:
In ...
Java resource as file
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answered Mar 24 '09 at 7:18
Jon SkeetJon Skeet
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Git On Custom SSH Port
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edited Nov 12 '14 at 10:07
Trufa
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Why doesn't delete set the pointer to NULL?
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12 Answers
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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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Measuring text width to be drawn on Canvas ( Android )
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answered Jul 15 '10 at 16:02
Marc BernsteinMarc Bernstein
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