, `founded` year(4) DEFAULT NULL, `country_id` smallint(5) unsigned DEFAULT NULL, PRIMARY KEY (`artist_id`), UNIQUE KEY `name` (`name`)) ENGINE=InnoDB DEFAULT CHARSET=latin11 row in set (0.00 sec)
Sort by file:
mysql> Explain select name, founded from artist where name like 'AUSTRALIA%' order by founded \G*************************** 1. row *************************** id: 1 select_type: SIMPLE table: artist type: rangepo
Sys_connect_by_path Function
Since Oracle 9i, you can use the sys_connect_by_path function to display the content from the parent node to the current row in the form of a "path" or a list of hierarchical elements. For example:Column path format A50Select level, sys_connect_by_path (child, "/") pathFrom hierStart with parent is nullConnect by prior child = parent;
Level path----------------------------------------------------1/Asia2/Asia/China3/Asia/China/Beijing2/Asia/Japan3/Asia/Japan/Osaka3/As
Germany
Costa Rica
Poland
Ecuador
England
Paraguay
Trinidad
Sweden
Argentina
Côte d'ivoire
Se
Netherlands
Mexico
Iran
Angola
Portugal
Italy
Ghana
USA
Czech Republic
Brazil
Croatia
Australia
Japan
France
Switzerland
South Korea
Togo
Spain
Ukraine
Tunisia
Reprinted from http://www.cnblogs.com/spnt/
After the entire MongoDB architecture has been deployed, it is time to truly test the capabilities of the architects: how to select the chip key.
If you select an inappropriate chip key, it may cause your entire application system to crash when the traffic increases. The same good chip key can constitute a benign ecosystem, add or delete servers as needed, and MongoDB will ensure that the system continues to run correctly.
Let's take a look at some ina
. These are part of the quality training, is an important means of training elite talent, but also foreign teaching characteristics.MLM Foundation has a strong overseas resources, hundred of the United States, the United Kingdom, Australia, Canada, the full support of elite universities, students graduated and qualified, can be helicopters, Canada top universities, the UK and Australia without a year of pre
. It can return the used value instead of the original value. if it returns the received message, the structure will be modified. If undefined (undefined) is returned, the member will be deleted.
Example:
// Interpreted text. If the key contains a string of 'date', convert the value to date.
Mydata = text. parsejson (function (Key, value ){Return key. indexof ('date')> = 0? New Date (value): value;});
The following is an example of converting an array into a corresponding JSON string:
/
soils "and my supervisor are Professor Lee.As for the first slide, a lot of Chinese students are used to writing this. I wrote it at the time, but I didn't feel any bad about it, but I didn't feel the passion flying like the old prologue. Some experienced speakers usually start off with something else, a few little jokes,Be active in the atmosphere. Remember when I came to Australia to do the first seminar mentioned the U.S. scientific research world
) VALUES (6, ' Africa ');INSERT into country (id,name) VALUES (7, ' Australia ');INSERT into country (id,name) VALUES (8, ' Canada ');INSERT into country (id,name) VALUES (9, ' America ');INSERT into country (id,name) VALUES (' Island nations ');INSERT into country (id,name) values (one, ' United States ');INSERT into country (id,name) VALUES (' Alabama ');INSERT into country (id,name) VALUES (' Alaska ');INSERT into country (id,name) VALUES (' Arizon
Tags: mysql plpgsql oracle cursor Connect byDatabase on the hierarchy of the processing model has a lot of, can according to their own needs to design models, of course, the simplest is the most easily designed model is called adjacency model. In this regard, other databases such as Oracle provide a ready-made analysis method for connect by, and MySQL is a bit weak in this regard. However, Oracle's similar analytics can be implemented with MySQL stored proceduresIn this way, first create a simpl
Database on the hierarchy of the processing model has a lot of, can according to their own needs to design models, of course, the simplest is the most easily designed model is called adjacency model. In this regard, other databases such as Oracle provide a ready-made analysis method for connect by, and MySQL is a bit weak in this regard. However, Oracle's similar analytics can be implemented with MySQL stored proceduresIn this way, first create a simple tables.CREATE TABLE Country (ID number (2)
http://blog.csdn.net/wojsg001/article/details/12005887app development to App store shelves, release process. Category: IOS2013-09-25 11:25 6434 People read Comments (1) favorite reports There is already a lot of information on this in the Internet. I have summed up three articles. We can look at it by reference.1.IOS development from novice to App store shelves.Http://www.cocoachina.com/special/fornew.html2. Apple App Store listings and approval processIPhone App Publish to AppStore the step
Click to view [original]
Required: $99 account. You don't have to read it any more.
First, log on to http://developer.apple.com/devcenter/ios/index.action. if you have purchased the iPhone develop program (IDP), you will see the page shown in the upper-right corner of the page:
Click the first entry: IOS provisioning portal, and the following page is displayed:
Click to enter certificates and you will see the following page:
Click click here to
information.-- Version: displays the local version of the command.
The sort key is mentioned in the preceding option description. Next, we will further describe the sort key. note that the land use value in the sorting operation is the internal value of the PS application, not only the pseudo value in some output formats. the following table lists the sort keys.
=============== Sort Key List ================================== =
C cmdExecutable simple nameC branch lineComplete command lineF flag
XCode6.0 iOS Certificate-free real machine test method (both MAC and black apple are valid)
Currently, iOS programs developed on XCode can only run in Simulator. If you want to test on a real machine, you need an officially authenticated developer account of Apple to buy the developer certificate iDP for $99 a year!
As a newbie who just started learning iOS programming, it's really a pain to spend so much money... After some tossing and learning fro
Step 1 of iPhone app development: Debug helloworld from scratch
ICC original, reprinted please indicate the source!
Recently, I started to study iPhone development. Because there is no mac, I used amd cpu + win7 + VMware to install Mac OS X snow leopard, upgrade it, And then install xcode 4.2 and iOS SDK 5.0, it is one of the most difficult and difficult ways to do. If conditions permit, do not make some tossing, time-consuming and labor-consuming. Since then, the real machine debugging is m
Address: http://tie.youdao.com/st_3979529905881611380
For real machine debugging, you must firstRegister an AP on the Apple websitePID and IPHOne develop program (IDP)Developer authorization, $99. Then create a certificate requestTo create a CSR file, follow these steps::Set OCSP and CRLIs disabled.Mac OSOpen the application and findToKey string access(KeychainAccess)OpenMain Menu-Certificate Assistant(CertificaTeAssistant)-Request a certificate from
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