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MySQL Cannot drop index needed in a foreign key constraint
...the index: ALTER TABLE mytable ADD CONSTRAINT mytable_ibfk_1 FOREIGN KEY (AID) REFERENCES mytable_a (ID) ON DELETE CASCADE;
– laffuste
Feb 11 '14 at 7:49
8
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How to remove an item from an array in AngularJS scope?
...ete($index)">Delete</a>
Controller:
$scope.delete = function ( idx ) {
var person_to_delete = $scope.persons[idx];
API.DeletePerson({ id: person_to_delete.id }, function (success) {
$scope.persons.splice(idx, 1);
});
};
...
SQL/mysql - Select distinct/UNIQUE but return all columns?
...ue.. Any other aggregate function available to address boolean – signonsridhar 6 mins ago. Sum(dynamic) changed false to 1
– signonsridhar
Aug 22 '16 at 2:00
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List of zeros in python [duplicate]
...tertools.repeat and [0] * n will create lists whose elements refer to same id. This is not a problem with immutable objects like integers or strings but if you try to create list of mutable objects like a list of lists ([[]] * n) then all the elements will refer to the same object.
a = [[]] * 10
a...
How to take screenshot of a div with JavaScript?
...ntents.
When the quiz is finished, do this:
var c = document.getElementById('the_canvas_element_id');
var t = c.getContext('2d');
/* then use the canvas 2D drawing functions to add text, etc. for the result */
When the user clicks "Capture", do this:
window.open('', document.getElementById('the...
TSQL Pivot without aggregate function
... = that value..
In this case, you could also self join 5 times on customerid, filter by dbColumnName per table reference. It may work out better.
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form with no action and where enter does not reload page
...ause a page reload in some browsers.. I've found that action="javascript:void(0);" works well.
– Dutchie432
Oct 17 '11 at 20:14
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Why Does OAuth v2 Have Both Access and Refresh Tokens?
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The idea of refresh tokens is that if an access token is compromised, because it is short-lived, the attacker has a limited window in which to abuse it.
Refresh tokens, if compromised, are useless because the attacker requires t...
Common MySQL fields and their appropriate data types
...I seem to almost exclusively use:
INT(11) for anything that is either an ID or references another ID
DATETIME for time stamps
VARCHAR(255) for anything guaranteed to be under 255 characters (page titles, names, etc)
TEXT for pretty much everything else.
Of course there are exceptions, but I find...
How does a Linux/Unix Bash script know its own PID?
I have a script in Bash called Script.sh , and it needs to know its own PID (i.e. I need to get PID inside the Script.sh )
...