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How to store arrays in MySQL?
... AS pfs_person_name,
cast(concat('[', group_concat(json_quote(fruit_name) ORDER BY fruit_name SEPARATOR ','), ']') as json) AS pfs_fruit_name_array
FROM
person
INNER JOIN person_fruit
ON person.person_id = person_fruit.pf_person
IN...
How much does it cost to develop an iPhone application? [closed]
...tal. Figure 500-1000 man hours. Contracting rates are $100-150/hr. Figure $50000-$150000. Compare your app to Obama.app and scale accordingly.
share
edited Dec 27 '11 at 20:20...
prototype based vs. class based inheritance
...e multiple inheritance: don't try to fake them.
– Hal50000
Oct 19 '16 at 17:21
add a comment
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...
Correct way to use StringBuilder in SQL
...ing like below?
No, it'll cause more memory churn than just the straight concat you quoted. (Until/unless the JVM optimizer sees that the explicit StringBuilder in the code is unnecessary and optimizes it out, if it can.)
If the author of that code wants to use StringBuilder (there are arguments ...
How to concatenate text from multiple rows into a single text string in SQL server?
...any relationships. In SQL 2005 I found that XML PATH method can handle the concatenation of the rows very easily.
If there is a table called STUDENTS
SubjectID StudentName
---------- -------------
1 Mary
1 John
1 Sam
2 Alaina
2 ...
In log4j, does checking isDebugEnabled before logging improve performance?
...en it involves invocation of the toString() methods of various objects and concatenating the results.
In the given example, the log message is a constant string, so letting the logger discard it is just as efficient as checking whether the logger is enabled, and it lowers the complexity of the code...
Why is String immutable in Java?
...uctor - almost anything which creates a new string, e.g. substring, split, concat etc will create new strings. Compile-time constants are the special case here, not the norm...
– Jon Skeet
May 26 '15 at 9:09
...
SQL NVARCHAR and VARCHAR Limits
...db (Shown here)
Regarding the other parts of your question
Truncation when concatenating depends on datatype.
varchar(n) + varchar(n) will truncate at 8,000 characters.
nvarchar(n) + nvarchar(n) will truncate at 4,000 characters.
varchar(n) + nvarchar(n) will truncate at 4,000 characters. nvarchar ...
How to use ng-repeat without an html element
...
var flat = [];
$scope.myData.forEach(function (item) {
flat.concat(item);
}
return flat;
}
}
And then in the HTML:
<table>
<tbody>
<tr ng-repeat="item in flattened()"><td>{{item}}</td></tr>
</tbody>
</table>
...
Generate random password string with requirements in javascript
... return x[Math.floor(Math.random() * x.length)];
}).join('');
}).concat().join('').split('').sort(function(){
return 0.5-Math.random();
}).join('')
}
// invoke like so: randPassword(5,3,2);
Same thing, as a 2-liner (admittedly, very long and ugly lines-- and won't be a 1-liner if ...