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What is the difference between a schema and a table and a database?
...chema (tables he/she owns) however user can also see any schemas they have select priviliedges on. So a database can consist of hundreds of schemas, and each schema hundreds of tables. You can have tables with the same name in different schemas, which are in the same database.
A Table is a table, ...
How to make ruler always be shown in Sublime text 2?
...
As others have stated before me, select Preferences -> Settings-User and change
"rulers": [],
to
"rulers": [80],
in order to display one ruler at column 80.
Now for the rub, it seems that one must use a monospaced font in order to display rulers so y...
How do you install an APK file in the Android emulator?
... find sdk path in your mac system, do the following steps: Open finder->select Go option on top menu -> select Go to Folder option -> it will popup a window with a textfield: /Users/your_system_username/Library/Android/sdk/ -> now open platform-tools folder and paste your copied .apk fi...
Group by with multiple columns using lambda
....Key.Country == "Ireland" && a.Key.Gender == "M")
.SelectMany(a => a)
.ToList();
Where CustomerGroupingKey takes the group keys:
private class CustomerGroupingKey
{
public CustomerGroupingKey(string country, string gender)
{
...
Finding most changed files in Git
...git log --pretty=format: --name-only | sort | uniq -c | sort -Descending | select -First 10
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How to change credentials for SVN repository in Eclipse?
...clipse. Another developer added an SVN repository with his credentials and selected 'Save password'. Now every time I do anything with SVN his cached credentials are used. How can I change them to mine?
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Vim: Replacing a line with another one yanked before
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Vp: select line, paste what was yanked
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convert_tz returns null
...L's dev site) the command was unable to convert between timezones such as
SELECT CONVERT_TZ('2004-01-01 12:00:00','UTC','MET') AS time
It turns out that on OS X there are two files that cause problems: /usr/share/zoneinfo/Factory and /usr/share/zoneinfo/+VERSION.
The fix... temporarily moving t...
Set Locale programmatically
...haredPrefUtils.saveLocale(locale); // optional - Helper method to save the selected language to SharedPreferences in case you might need to attach to activity context (you will need to code this)
Resources resources = getResources();
Configuration configuration = resources.getConfiguration()...
Ruby on Rails: getting the max value from a DB column
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one more way
Bar.select("Max(bar) as max_bar").first.max_bar
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