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SQL JOIN and different types of JOINs
What is a SQL JOIN and what are different types?
6 Answers
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javascript: Clear all timeouts?
Is there a way to clear all time outs from a given window? I suppose the timeouts are stored somewhere in the window object but couldn't confirm that.
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jQuery UI Sortable, then write order into a database
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The jQuery UI sortable feature includes a serialize method to do this. It's quite simple, really. Here's a quick example that sends the data to the specified URL as soon as an element has changes position.
$('#element').sortable({
axis: 'y',
updat...
How to remove item from list in C#?
I have a list stored in resultlist as follows:
8 Answers
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What is a proper naming convention for MySQL FKs?
Being that they must be unique, what should I name FK's in a MySQL DB?
4 Answers
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How to get multiple counts with one SQL query?
I am wondering how to write this query.
9 Answers
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Exposing database IDs - security risk?
I've heard that exposing database IDs (in URLs, for example) is a security risk, but I'm having trouble understanding why.
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Mysql error 1452 - Cannot add or update a child row: a foreign key constraint fails
I'm having a bit of a strange problem. I'm trying to add a foreign key to one table that references another, but it is failing for some reason. With my limited knowledge of MySQL, the only thing that could possibly be suspect is that there is a foreign key on a different table referencing the one I ...
How to delete from select in MySQL?
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SELECT (sub)queries return result sets. So you need to use IN, not = in your WHERE clause.
Additionally, as shown in this answer you cannot modify the same table from a subquery within the same query. However, you can either SELECT then DELETE in separate queries, or nest another su...
What is the meaning of id?
I am (trying to) learn Objective-C and I keep coming across a phrase like:
5 Answers
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