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Limitations of SQL Server Express
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How to select unique records by SQL
..., but also the most limited way:
SELECT DISTINCT word, num
FROM dupes
ORDER BY word, num;
/*
word|num|
----|---|
aaa |100|
bbb |200|
bbb |400|
ccc |300|
ddd |400|
*/
Option 2: GROUP BY
Grouping allows you to add aggregated data, like the min(id), max(id), count(*), etc:
SELECT word, num, ...
Explain the encapsulated anonymous function syntax
...cript, this is called Immediately-Invoked Function Expression (IIFE) .
In order to make it a function expression you've to:
enclose it using ()
place a void operator before it
assign it to a variable.
Otherwise it will be treated as function definition and then you won't be able to call/invo...
Accessing an SQLite Database in Swift
...this under the Project build settings and not the Target build settings in order for Xcode to find the bridging header.
– rob5408
Nov 11 '14 at 5:54
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SSRS chart does not show all labels on Horizontal axis
... suggest changing the labels to have shorter values.
You can set the sort order for the Category Groups in the Category Group Properties - Sorting section - this may have been previously set; if not, I suggest using this to sort as desired.
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Java Set retain order?
Does a Java Set retain order? A method is returning a Set to me and supposedly the data is ordered but iterating over the Set, the data is unordered. Is there a better way to manage this? Does the method need to be changed to return something other than a Set?
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When to add what indexes in a table in Rails
...B and simply A, so you can design your indexes to be more versatile if you order them correctly. The phone book is indexed on Last Name, First Name, so you can look up people easily by their last name, or a combination of last name and first name. You cannot, however, look them up directly by their ...
Python super() raises TypeError
...e various X.a() methods; however, they seem to require an instance of X in order to perform a(), so I did X().a(self), which seems more complete than the previous answers, at least for the applications I've encountered. It doesn't seem to be a good way of handling the problem as there is unnecessary...
Merge / convert multiple PDF files into one PDF
...ite *.pdf out.pdf assuming no other pdf exists in that directory and their order is preserved by "*". If its not preserved, using ranges: filename_{0..9}.pdf solves it.
– lepe
Jan 5 '15 at 5:48
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Pandas every nth row
...row-selections.
This assumes, of course, that you have an index column of ordered, consecutive, integers starting at 0.
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