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MySQL order by before group by
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Using an ORDER BY in a subquery is not the best solution to this problem.
The best solution to get the max(post_date) by author is to use a subquery to return the max date and then join that to your table on both the post_author and the ...
How to select a single field for all documents in a MongoDB collection?
...that match the query. In the result set, only the item and qty fields and, by default, the _id field return in the matching documents.
db.inventory.find( { type: 'food' }, { item: 1, qty: 1 } )
In this example from the folks at Mongo, the returned documents will contain only the fields of item, qty...
how to add records to has_many :through association in rails
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Another way to add associations is by using the foreign key columns:
agent = Agent.new(...)
agent.house = House.find(...)
agent.customer = Customer.find(...)
agent.save
Or use the exact column names, passing the ID of the associated record instead of the re...
How to make layout with View fill the remaining space?
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Answer from woodshy worked for me, and it is simpler than the answer by Ungureanu Liviu since it does not use RelativeLayout.
I am giving my layout for clarity:
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="hor...
What is the difference between properties and attributes in HTML?
...ocs.
HTML attribute vs. DOM property
Attributes are defined by HTML. Properties are defined by the DOM
(Document Object Model).
A few HTML attributes have 1:1 mapping to properties. id is one
example.
Some HTML attributes don't have corresponding properties. colspan is
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Remove Primary Key in MySQL
... the table to obtain the maximum column value. Typically, this is achieved by making the column the first column of some table index.
– Quassnoi
Sep 23 '13 at 20:17
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jquery change class name
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You can set the class (regardless of what it was) by using .attr(), like this:
$("#td_id").attr('class', 'newClass');
If you want to add a class, use .addclass() instead, like this:
$("#td_id").addClass('newClass');
Or a short way to swap classes using .toggleClass():
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Get attribute name value of
...tr('name'));
Note that you can also use attr to set the attribute values by specifying second argument:
$('input').attr('name', 'new_name')
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How do you join on the same table, twice, in mysql?
... DOM_URL fields from both LEFT JOINS of the DOMAIN table, referencing them by the table alias for each joined in reference to the Domains table, and alias them as the ToURL and FromUrl.
For more info about aliasing in SQL, read here.
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jQuery: select all elements of a given class, except for a particular Id
...jquery_ref_selectors.asp for more information on jQuery selectors.
Ignore by Exact ID:
$(".thisClass").not('[id="thisId"]').doAction();
Ignore ID's that contains the word "Id"
$(".thisClass").not('[id*="Id"]').doAction();
Ignore ID's that start with "my"
$(".thisClass").not('[id^="my"]').do...