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Oracle: how to UPSERT (update or insert into a table?)
....
create or replace
procedure ups(xa number)
as
begin
merge into mergetest m using dual on (a = xa)
when not matched then insert (a,b) values (xa,1)
when matched then update set b = b+1;
end ups;
/
drop table mergetest;
create table mergetest(a number, b number);
call ups(...
Nokogiri installation fails -libxml2 is missing
...hain (at least I ran into this issue on Debian Lenny).
The Nokogiri build test-compiles a libxml2 header file to verify that it is present, however, it doesn't differentiate between "libxml2 is missing" and "a compiler to test libxml2 is missing".
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How to declare a friend assembly?
...tocol Buffers I use:
[assembly:InternalsVisibleTo("Google.ProtocolBuffers.Test,PublicKey="+
"00240000048000009400000006020000002400005253413100040000010001008179f2dd31a648"+
"2a2359dbe33e53701167a888e7c369a9ae3210b64f93861d8a7d286447e58bc167e3d99483beda"+
"72f738140072bb69990bc4f98a21365de2c105e848...
How to read a single character from the user?
...har.readchar()))
print("Reading a key:")
print(repr(readchar.readkey()))
Tested on Windows and Linux with Python 2.7.
On Windows, only keys which map to letters or ASCII control codes are supported (Backspace, Enter, Esc, Tab, Ctrl+letter). On GNU/Linux (depending on exact terminal, perhaps?) you...
Reading a resource file from within jar
...m returns null if the resource does not exist so that can be your "exists" test.
– Drew MacInnis
Dec 5 '13 at 19:05
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How to update npm
...l mean.io boilerplate. It fails when running sudo npm install -g meanio@latest . Prior to failing it notes that it 'wants' npm version 1.4.x, whereas I have 1.2.18 installed. So I tried updating npm to the latest; several ways. Last of which was...
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What are the differences between double-dot “..” and triple-dot “…” in Git diff commit ranges?
...m graph tree
A0 <- A1 <- A2 <- A3 (master)
\
C0 <- C1 (test)
A picture is worth a thousand words, the difference between .. ... ^ is shown below.
$ git log master..test
# output C0 C1
$ git log ^master test
# output C0 C1
$ git log master…test
# output A1 A2 A3 C0 C1
...
How can I return pivot table output in MySQL?
...
The SQL way...
Given his table looks something like this:
CREATE TABLE `test_pivot` (
`pid` bigint(20) NOT NULL AUTO_INCREMENT,
`company_name` varchar(32) DEFAULT NULL,
`action` varchar(16) DEFAULT NULL,
`pagecount` bigint(20) DEFAULT NULL,
PRIMARY KEY (`pid`)
) ENGINE=MyISAM;
Now loo...
Detect if a page has a vertical scrollbar?
...he solutions outlined here will be enough. You are better off using a well-tested plugin - mine or anybody elses.
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Is it good practice to make the constructor throw an exception? [duplicate]
...he code. You need manual fixes to recover. Ex. An object constructor loads test data (usernames, passwords, etc.) from a config file. All tests then use the data in config object. Exceptions can be thrown if the file can't be found, data is in wrong format etc. I think the only way we can recover fr...