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What is this operator in MySQL?
... on this, your particular query (fragment) can be converted to the more portable:
WHERE p.name IS NULL
Support
The SQL:2003 standard introduced a predicate for this, which works exactly like MySQL's <=> operator, in the following form:
IS [NOT] DISTINCT FROM
The following is universally sup...
Can I use CASE statement in a JOIN condition?
...
Instead, you simply JOIN to both tables, and in your SELECT clause,
return data from the one that matches:
I suggest you to go through this link Conditional Joins in SQL Server and T-SQL Case Statement in a JOIN ON Clause
e.g.
SELECT *
FROM sys...
Is there a way to make AngularJS load partials in the beginning and not at when needed?
...e the url forexample: $http.get('app/correction/templates/group-correction-table.html', {cache:$templateCache}); and then whenever I want to load the template I have to use this ugly name :( which I don't like, Like this: <td ng-include="'app/correction/templates/group-correction-table.html'">...
Why is isNaN(null) == false in JS?
...is a value of the numeric data type representing an undefined or unrepresentable value, especially in floating-point calculations.
In most cases we think the answer to "is null numeric?" should be no. However, isNaN(null) == false is semantically correct, because null is not NaN.
Here's the algor...
c# datatable insert column at position 0
does anyone know the best way to insert a column in a datatable at position 0?
3 Answers
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phpmyadmin logs out after 1440 secs
...in install path (ex. /usr/share/phpMyAdmin/ on my centos7) and find create_tables.sql in one of its subfolders (phpMyAdmin/sql/create_tables.sql in my 4.4.9 version.) and execute whole file contents on your current phpMyAdmin site from your web browser. This will create a database named phpmyadmin w...
Is it possible to use 'else' in a list comprehension? [duplicate]
...t; [a if a else 2 for a in [0,1,0,3]]
[2, 1, 2, 3]
So for your example,
table = ''.join(chr(index) if index in ords_to_keep else replace_with
for index in xrange(15))
share
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imp...
Difference between Activity Context and Application Context
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I found this table super useful for deciding when to use different types of Contexts:
An application CAN start an Activity from here, but it requires that a new task be created. This may fit specific use cases, but can create non-sta...
What does (x ^ 0x1) != 0 mean?
...hex notation
x ^ 0x1 will invert the last bit of x (refer to the XOR truth table in the link above if that's not clear to you).
So, the condition (0 != ( x ^ 0x1 )) will be true if x is greater than 1 or if the last bit of x is 0. Which only leaves x==1 as a value at which the condition will be fa...