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The object 'DF__*' is dependent on column '*' - Changing int to double
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Try this:
Remove the constraint DF_Movies_Rating__48CFD27E before changing your field type.
The constraint is typically created automatically by the DBMS (SQL Server).
To see the constraint associated with the table, expand the table attributes in Object explorer, followed by the cat...
What is the difference between properties and attributes in HTML?
...a corresponding DOM node will be created. This node is an object, and therefore it has properties.
For instance, this HTML element:
<input type="text" value="Name:">
has 2 attributes (type and value).
Once the browser parses this code, a HTMLInputElement object will be created, and this o...
Postgres NOT in array
...{1,2,3}') does not yield the desired result: The process compares 3 with 1 for inequality, which is true, and immediately returns true. A single value in the array different from 3 is enough to make the entire condition true. The 3 in the last array position is prob. never used.
3 <> all('{1,...
Can you require two form fields to match with HTML5?
Is there a way to require the entries in two form fields to match using HTML5? Or does this still have to be done with javascript? For example, if you have two password fields and want to make sure that a user has entered the same data in each field, are there some attributes, or other coding that c...
Is there any way to kill a Thread?
... that must be killed as well.
The nice way of handling this if you can afford it (if you are managing your own threads) is to have an exit_request flag that each threads checks on regular interval to see if it is time for it to exit.
For example:
import threading
class StoppableThread(threading...
How to prevent buttons from submitting forms
In the following page, with Firefox the remove button submits the form, but the add button does not.
17 Answers
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how to override action bar back button in android?
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This worked for me after I changed return true; to return super.onOptionsItemSelected(item). Then you can make something happen when the user clicks the actionbar back button, but still retain the same functionality of the button.
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On Duplicate Key Update same as insert
...e the same as your new ones, why would you need to update it in any case?
For eg. if your columns a to g are already set as 2 to 8; there would be no need to re-update it.
Alternatively, you can use:
INSERT INTO table (id,a,b,c,d,e,f,g)
VALUES (1,2,3,4,5,6,7,8)
ON DUPLICATE KEY
UPDATE a=a, b...
Can someone explain collection_select to me in clear, simple terms?
I am going through the Rails API docs for collection_select and they are god-awful.
2 Answers
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Ordering by the order of values in a SQL IN() clause
... to put this burden on the client rather than server if you have server performance in mind.
– ivan_pozdeev
Feb 7 '15 at 22:21
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