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Rails 3: Get Random Record
So, I've found several examples for finding a random record in Rails 2 -- the preferred method seems to be:
14 Answers
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MySQL Multiple Joins in one query?
I have the following query:
4 Answers
4
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How to fetch the row count for all tables in a SQL SERVER database [duplicate]
I am searching for a SQL Script that can be used to determine if there is any data (i.e. row count) in any of the tables of a given database.
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Duplicate ID, tag null, or parent id with another fragment for com.google.android.gms.maps.MapFragme
...r me:
private static View view;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
if (view != null) {
ViewGroup parent = (ViewGroup) view.getParent();
if (parent != null)
parent.removeView(view);
}
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postgresql: INSERT INTO … (SELECT * …)
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As Henrik wrote you can use dblink to connect remote database and fetch result. For example:
psql dbtest
CREATE TABLE tblB (id serial, time integer);
INSERT INTO tblB (time) VALUES (5000), (2000);
psql postgres
CREATE TABLE tblA (id serial, time integer)...
How do you use the “WITH” clause in MySQL?
I am converting all my SQL Server queries to MySQL and my queries that have WITH in them are all failing. Here's an example:
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How to define object in array in Mongoose schema correctly with 2d geo index
I'm currently having problems in creating a schema for the document below. The response from the server always returns the "trk" field values as [Object]. Somehow I have no idea how this should work, as I tried at least all approaches which made sense to me ;-)
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When should I use a composite index?
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You should use a composite index when you are using queries that benefit from it. A composite index that looks like this:
index( column_A, column_B, column_C )
will benefit a query that uses those fields for joining, filtering, and sometimes selecti...
Pandas percentage of total with groupby
This is obviously simple, but as a numpy newbe I'm getting stuck.
14 Answers
14
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How do you obtain a Drawable object from a resource id in android package?
...display on an image button. Is there a way to use the code below (or something like it) to get an object from the android.R.drawable.* package?
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