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What is the difference between “INNER JOIN” and “OUTER JOIN”?
...b;
a | b
--+--
3 | 3
4 | 4
Left outer join
A left outer join will give all rows in A, plus any common rows in B.
select * from a LEFT OUTER JOIN b on a.a = b.b;
select a.*, b.* from a,b where a.a = b.b(+);
a | b
--+-----
1 | null
2 | null
3 | 3
4 | 4
Right outer join
A right outer j...
How do I tell Maven to use the latest version of a dependency?
In Maven, dependencies are usually set up like this:
12 Answers
12
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List of foreign keys and the tables they reference
...key is described in the columns r_owner and r_constraint_name of the table ALL_CONSTRAINTS. This will give you the info you want:
SELECT a.table_name, a.column_name, a.constraint_name, c.owner,
-- referenced pk
c.r_owner, c_pk.table_name r_table_name, c_pk.constraint_name r_pk
FROM...
How do I delete everything in Redis?
I want to delete all keys. I want everything wiped out and give me a blank database.
22 Answers
...
MongoDB logging all queries
The question is as basic as it is simple... How do you log all queries in a "tail"able log file in mongodb?
15 Answers
...
Print a list of all installed node.js modules
In a node.js script that I'm working on, I want to print all node.js modules (installed using npm) to the command line. How can I do this?
...
I need to get all the cookies from the browser
I need to get all the cookies stored in my browser using JavaScript. How can it be done?
9 Answers
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Pure JavaScript equivalent of jQuery's $.ready() - how to call a function when the page/DOM is ready
With jQuery, we all know the wonderful .ready() function:
10 Answers
10
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What's the recommended approach to resetting migration history using Django South?
...inted out by @thnee below. Since your
answer has so many upvotes I'd really appreciate it if you could edit
it and add at least a warning about this, or (even better) change it
to reflect @hobs approach (which is just as convenient, but doesn't
affect other apps) - thanks! – chris...
Notepad++ add to every line
...eplace with textbox
Place cursor in the first line of the file to ensure all lines are affected
Click Replace All button
To add a word, such as test, at the end of each line:
Type $ in the Find what textbox
Type test in the Replace with textbox
Place cursor in the first line of...