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Best practices for SQL varchar column length [closed]
...), it does not make any difference whether you declare a column as VARCHAR(100) or VARCHAR(500).
You should see the max length provided for a VARCHAR column as a kind of constraint (or business rule) rather than a technical/physical thing.
For PostgreSQL the best setup is to use text without a le...
How to remove a file from version control without deleting it?
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edited Mar 13 '19 at 21:16
Richard Chambers
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Changes in import statement python3
...n(degrees(x))
Note that it already triggers a warning in Python 2:
a.py:1: SyntaxWarning: import * only allowed at module level
def sin_degrees(x):
In modern Python 2 code you should and in Python 3 you have to do either:
def sin_degrees(x):
from math import sin, degrees
return sin(d...
JavaScript plus sign in front of function expression
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It forces the parser to treat the part following the + as an expression. This is usually used...
Use of 'use utf8;' gives me 'Wide character in print'
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Without use utf8 Perl interprets your string as a sequence of single byte characters. There ar...
in entity framework code first, how to use KeyAttribute on multiple columns
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155
You can specify the column order in the attributes, for instance:
public class MyEntity
{
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What is the difference between `after_create` and `after_save` and when to use which?
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after_create only works once - just after the record is first created.
after_save works every ...
Difference between a User and a Login in SQL Server
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edited Feb 1 '14 at 15:27
AminM
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a...
How to set current working directory to the directory of the script in bash?
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How to check if running as root in a bash script
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17 Answers
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