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How do I alter the position of a column in a PostgreSQL database table?
...on" in the PostgreSQL Wiki says:
PostgreSQL currently defines column
order based on the attnum column of
the pg_attribute table. The only way
to change column order is either by
recreating the table, or by adding
columns and rotating data until you
reach the desired layout.
That's ...
How to sort an ArrayList?
... have a List of doubles in java and I want to sort ArrayList in descending order.
20 Answers
...
Using awk to remove the Byte-order mark
... to true, so each record is printed.
Enjoy!
-- ADDENDUM --
Unicode Byte Order Mark (BOM) FAQ includes the following table listing the exact BOM bytes for each encoding:
Bytes | Encoding Form
--------------------------------------
00 00 FE FF | UTF-32, big-endian
FF FE 00 00 | UTF-...
How to insert a line break in a SQL Server VARCHAR/NVARCHAR string
...
This is non-deterministic. A table is defined as an unordered set of records. There is no guarantee that the database engine will return the records in the order inserted. Without a second column to preserve the order in some way (a simple IDENTITY() would work) and an ORDER BY ...
MySQL ERROR 1045 (28000): Access denied for user 'bill'@'localhost' (using password: YES)
...connect, the server looks through the rows [of table mysql.user] in sorted order.
The server uses the first row that matches the client host name and user name.
(...)
The server uses sorting rules that order rows with the most-specific Host values first.
Literal host names [such as 'lo...
What is a “context bound” in Scala?
...les about manifests as "T has a Manifest". The example you linked to about Ordered vs Ordering illustrates the difference. A method
def example[T <% Ordered[T]](param: T)
says that the parameter can be seen as an Ordered. Compare with
def example[T : Ordering](param: T)
which says that the ...
Drawing Isometric game worlds
...ng to be a pitfall to implementing the above example code -- the rendering order will cause tiles that are supposed to be behind certain tiles to be drawn on top of the tiles in front:
In order to amend this problem, the inner for-loop's order must be reversed -- starting from the highest value, ...
What is the difference between i++ and ++i?
...prefix (++var) and postfix (var++) versions of ++ do things in a different order with respect to other operations.
It is unsurprising that you'll see a lot of wrong answers to this question. A great many "teach yourself C#" books also get it wrong. Also, the way C# does it is different than how C do...
SQL Server: Query fast, but slow from procedure
...understanding, it's a great write up. e.g.
Slow way:
CREATE PROCEDURE GetOrderForCustomers(@CustID varchar(20))
AS
BEGIN
SELECT *
FROM orders
WHERE customerid = @CustID
END
Fast way:
CREATE PROCEDURE GetOrderForCustomersWithoutPS(@CustID varchar(20))
AS
BEGIN
DECLARE @LocCustID...
How to urlencode a querystring in Python?
... not always do the trick. The problem is that some services care about the order of arguments, which gets lost when you create the dictionary. For such cases, urllib.quote_plus is better, as Ricky suggested."
– Blairg23
Aug 17 '15 at 21:35
...