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Ordering by the order of values in a SQL IN() clause
...is will do exactly what you want if you paste the ids into the IN() clause and the FIELD() function in the same order.
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Check if PHP session has already started
...a PHP file that is sometimes called from a page that has started a session and sometimes from a page that doesn't have session started. Therefore when I have session_start() on this script I sometimes get the error message for "session already started". For that I've put these lines:
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How do you return the column names of a table?
...rver 2008? i.e. a table contains these columns- id, name, address, country and I want to return these as data.
20 Answers
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android.view.InflateException: Binary XML file: Error inflating class fragment
I have a very frustrating error that I cannot explain. I created an Android application that uses Android AppCompat to make it compatible with older versions. Here is my main activity layout file:
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How do you join on the same table, twice, in mysql?
I have 2 tables. One (domains) has domain ids, and domain names (dom_id, dom_url).
3 Answers
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SQL left join vs multiple tables on FROM line?
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The old syntax, with just listing the tables, and using the WHERE clause to specify the join criteria, is being deprecated in most modern databases.
It's not just for show, the old syntax has the possibility of being ambiguous when you use both INNER and OUTER joins in ...
document.getElementById vs jQuery $()
...e same result as document.getElementById, you can access the jQuery Object and get the first element in the object (Remember JavaScript objects act similar to associative arrays).
var contents = $('#contents')[0]; //returns a HTML DOM Object
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PostgreSQL - max number of parameters in “IN” clause?
..., but this is only
* possible if the inputs are all scalars (no RowExprs) and there is a
* suitable array type available. If not, we fall back to a boolean
* condition tree with multiple copies of the lefthand expression.
* Also, any IN-list items that contain Vars are handled as separate
* bo...
When to use .First and when to use .FirstOrDefault with LINQ?
I've searched around and haven't really found a clear answer as to when you'd want to use .First and when you'd want to use .FirstOrDefault with LINQ.
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In Windows cmd, how do I prompt for user input and use the result in another command?
I have a Windows .bat file which I would like to accept user input and then use the results of that input as part of the call to additional commands.
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