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Do DOM tree elements with ids become global variables?
...e HTMLElement wrapper I stumbled upon the following for Internet Explorer and Chrome :
5 Answers
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Mysql error 1452 - Cannot add or update a child row: a foreign key constraint fails
...was fine from the mysql point of view(both tables should use InnoDB engine and the datatype of each column should be of the same type which takes part in foreign key constraint).
The only thing that I did was to disable the foreign key check and later on enabled it after performing the foreign key o...
Get generated id after insert
I'm using the SQLite with Android, and I want to know the best way to get the generated id of the row I inserted.
5 Answers...
Delete all Duplicate Rows except for One in MySQL? [duplicate]
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Editor warning: This solution is computationally inefficient and may bring down your connection for a large table.
NB - You need to do this first on a test copy of your table!
When I did it, I found that unless I also included AND n1.id <> n2.id, it deleted every row in the ta...
Changing an element's ID with jQuery
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Don't you need to detach the element from the DOM and replace it with a new element with a new ID in it's place? To avoid breaking the DOM ...?
– cllpse
Dec 8 '08 at 13:09
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What is the X-REQUEST-ID http header?
... this subject, read various articles about this header, its use in Heroku, and projects based on Django.
4 Answers
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dynamically add and remove view to viewpager
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After figuring out which ViewPager methods are called by ViewPager and which are for other purposes, I came up with a solution. I present it here since I see a lot of people have struggled with this and I didn't see any other relevant answers.
First, here's my adapter; hopefully comments ...
Actionbar notification count icon (badge) like Google has
Is there a android standard badge or method to show action bar notification icon with a count like on Google examples?
9 An...
When should I use a composite index?
..._C )
will benefit a query that uses those fields for joining, filtering, and sometimes selecting. It will also benefit queries that use left-most subsets of columns in that composite. So the above index will also satisfy queries that need
index( column_A, column_B, column_C )
index( column_A, col...
How to check if a Constraint exists in Sql server?
... queries for that:
--Returns one row for each CHECK, UNIQUE, PRIMARY KEY, and/or FOREIGN KEY
SELECT *
FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS
WHERE CONSTRAINT_NAME='XYZ'
--Returns one row for each FOREIGN KEY constrain
SELECT *
FROM INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS
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