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How to order by with union in SQL?
...olas Carey - when I initially tested using a UNION it was behaving unpredictably as you described, I think the UNION ALL (at least in Oracle) was necessary to order the top SELECT above the bottom. However I've provided an alternate that does guarantee correct ordering and should be database indepe...
Is there a ternary conditional operator in T-SQL?
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Use case:
select *
from table
where isExternal = case @type when 2 then 1 else 0 end
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How to style a div to be a responsive square? [duplicate]
...v {
position:absolute; top:0;
height:100%; width:100%;
display:table;
border:1px solid #000;
margin:1em;
}
body > div > div > div{
display:table-cell;
vertical-align:middle; text-align:center;
padding:1em;
}
...
Comparing date ranges
... |-----| equal start with end of comparison period
If your table has columns called range_end and range_start, here's some simple SQL to retrieve all the matching rows:
SELECT *
FROM periods
WHERE NOT (range_start > @check_period_end
OR range_end < @check_period_s...
What goes into the “Controller” in “MVC”?
...ated with that data; if you have a rule that says that for all cases where TABLE.foo == "Hooray!" and TABLE.bar == "Huzzah!" then set TABLE.field="W00t!", then you want the Model to take care of it.
The Controller is what should be handling the bulk of the application's behavior. So to answer your...
What algorithm gives suggestions in a spell checker?
...nction.
Insert all of your dictionary words into an auxiliary index (hash table) using this special hash function. The buckets in this table will have longish collision lists because the hash function is "bad", but those collision lists are essentially pre-computed suggestions.
Now, when you find...
What are the differences between a multidimensional array and an array of arrays in C#?
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Simply put multidimensional arrays are similar to a table in DBMS.
Array of Array (jagged array) lets you have each element hold another array of the same type of variable length.
So, if you are sure that the structure of data looks like a table (fixed rows/columns), you can ...
Getting the closest string match
...o far.
While unused in the final optimization, a benchmarking sheet was established which matches columns to themselves for all perfect results down the diagonal, and lets the user change parameters to control the rate at which scores diverge from 0, and note innate similarities between search phra...
If isset $_POST
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This comparison table is very helpful for things like this php.net/manual/en/types.comparisons.php
– A Star
Jun 4 '13 at 22:16
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How do HTML parses work if they're not using regexp?
... weirdness, trying to make the result look as good as you can and the inevitable failure the least painful... this is not something you can do with regexes.
– SF.
Mar 8 '10 at 11:16
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