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MySQL “Group By” and “Order By”
..., so unless they are the same, the values chosen are indeterminate."
As of 5.7.5 ONLY_FULL_GROUP_BY is enabled by default so non-aggregate columns cause query errors (ER_WRONG_FIELD_WITH_GROUP)
As @mikep points out below the solution is to use ANY_VALUE() from 5.7 and above
See
http://www.cafewebmas...
How do I generate random integers within a specific range in Java?
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+150
In Java 1.7 or later, the standard way to do this is as follows:
import java.util.concurrent.ThreadLocalRandom;
// nextInt is norma...
Can overridden methods differ in return type?
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public Circle build() {
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}
This is specified in section 8.4.5 of the Java Language Specification:
Return types may vary among methods that override each other if the return types are reference types. The notion of return-type-substitutability supports covariant returns, that is, t...
Git - Difference Between 'assume-unchanged' and 'skip-worktree'
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edited Jan 14 '15 at 15:28
answered Nov 29 '12 at 17:39
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Else clause on Python while statement
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answered Jul 21 '10 at 2:51
arsars
99.7k2121 gold badges130130 silver badges129129 bronze badges
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Generic method multiple (OR) type constraint
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answered May 31 '12 at 12:50
Botz3000Botz3000
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How to print binary tree diagram?
...;Integer>(7);
Node<Integer> n12 = new Node<Integer>(5);
Node<Integer> n21 = new Node<Integer>(2);
Node<Integer> n22 = new Node<Integer>(6);
Node<Integer> n23 = new Node<Integer>(3);
Node<Integer> n24 = n...
Get operating system info
...s that, it sniffs your core operating system model, for example windows nt 5.1 as my own.
It then passes windows nt 5.1/i to Windows XP as the operating system.
Using: '/windows nt 5.1/i' => 'Windows XP', from an array.
You could say guesswork, or an approximation yet nonetheless pretty much ...
How does Go update third-party packages?
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StartupGuy
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answered Apr 30 '12 at 12:33
tux21btux21b
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How do CDI and EJB compare? interact?
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CDI: it is about dependency injection. It means that you can inject interface implementation an...