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Nullable Foreign Key bad practice?
Let's say you have a table Orders with a foreign key to a Customer Id. Now, suppose you want to add an Order without a Customer Id, (whether that should be possible is another question) you would have to make the foreign key NULL... Is that bad practice or would you rather work with a link table bet...
How do I check if a Sql server string is null or empty
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I couldn't decide if I should upvote your answer or unclefofa's, since he seems to have answered first, but his answer has been edited after you answered. I ended upvoting both.
– Zecc
Mar 22 '11 at 1...
Dynamic validation and name in a form with AngularJS
I have this form : http://jsfiddle.net/dfJeN/
9 Answers
9
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How do I reverse a C++ vector?
...w of their content with rbegin() and rend(). These two functions return so-calles reverse iterators, which can be used like normal ones, but it will look like the container is actually reversed.
#include <vector>
#include <iostream>
template<class InIt>
void print_range(InIt firs...
Strange SQLAlchemy error message: TypeError: 'dict' object does not support indexing
...p:
c.execute("SELECT * FROM t WHERE a = %s")
In other words, if you provide parameter (%s) in query, but you forget to add query params. In this case error message is very misleading.
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imp...
returning a Void object
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then what is the generically correct way to achieve a return type of void?
– Robert
Mar 9 '10 at 11:40
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How can I get name of element with jQuery?
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You should use attr('name') like this
$('#yourid').attr('name')
you should use an id selector, if you use a class selector you encounter problems because a collection is returned
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What is the difference between SqlCommand.CommandTimeout and SqlConnection.ConnectionTimeout?
...r a connection has been opened and one of the ExecuteXXX methods have been called on the Command object.
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How can I create an array with key value pairs?
...racket syntax:
if (!empty($row["title"])) {
$catList[$row["datasource_id"]] = $row["title"];
}
$row["datasource_id"] is the key for where the value of $row["title"] is stored in.
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Scroll Automatically to the Bottom of the Page
Consider I have a list of questions. When I click on the first question, it should automatically take me to the bottom of the page.
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