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SQL/mysql - Select distinct/UNIQUE but return all columns?
...ect *
from (
select *,
row_number() over (partition by field1 order by field2) as row_number
from table
) as rows
where row_number = 1
On others (MySQL, SQLite), you'll need to write subqueries that will make you join the entire table with itself (example), so not recommended.
...
How do I use InputFilter to limit characters in an EditText in Android?
...subsequence the source? Do you see anything wrong with just doing this (in order to only allow alphanumerics plus a few special characters): String replacement = source.subSequence(start, end).toString(); return replacement.replaceAll("[^A-Za-z0-9_\\-@]", "");
– Splash
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How can I combine multiple rows into a comma-delimited list in Oracle? [duplicate]
..._name , ','), 2) csv
FROM (SELECT country_name , ROW_NUMBER () OVER (ORDER BY country_name ) rn,
COUNT (*) OVER () cnt
FROM countries)
WHERE rn = cnt
START WITH rn = 1
CONNECT BY rn = PRIOR rn + 1;
CSV ...
Draw radius around a point in Google map
...enerate a KML file by modifying http://www.nearby.org.uk/google/circle.kml.php?radius=30miles&lat=40.173&long=-105.1024 and then importing it. In Google Maps, you can just paste the URI in the search box and it will display on the map. I'm not sure how you might do it using the API though....
How to get an outline view in sublime texteditor?
... Sounds good. But nothing happens when I press ctrl-r. I have a php file open. Can I locate the command in a menu? Does this work without a plugin? karlthorwald
– user89021
Feb 6 '10 at 3:34
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Mapping composite keys using EF code first
...
You definitely need to put in the column order, otherwise how is SQL Server supposed to know which one goes first? Here's what you would need to do in your code:
public class MyTable
{
[Key, Column(Order = 0)]
public string SomeId { get; set; }
[Key, Column(...
Naming “class” and “id” HTML attributes - dashes vs. underlines [closed]
...selectors by any characters (including none at all) other than hyphens, in order to improve understanding and scannability.
/* Not recommended: does not separate the words “demo” and “image” */
.demoimage {}
/* Not recommended: uses underscore instead of hyphen */
.error_status {}
/* Reco...
Common elements comparison between 2 lists
...at when I ended up on this page, it was important to preserve the original order of the elements for the post-filtered elements. This method loses the order, whereas the list comprehension method preserves the order. Important if anyone needs to consider this. Thanks.
– agft...
How to avoid mysql 'Deadlock found when trying to get lock; try restarting transaction'
... that can help with most deadlocks is sorting the operations in a specific order.
You get a deadlock when two transactions are trying to lock two locks at opposite orders, ie:
connection 1: locks key(1), locks key(2);
connection 2: locks key(2), locks key(1);
If both run at the same time, connecti...
Creating stored procedure and SQLite?
...r extend SQLite with your own user defined functions in the host language (PHP, Python, Perl, C#, Javascript, Ruby etc). You can then use these custom functions as part of any SQLite select/update/insert/delete. I've done this in C# using DevArt's SQLite to implement password hashing.
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