best engine

] then [result]...else [Default] End Function:Mysql> Select Case when salary+---------------------------------------------------+| case where salary+---------------------------------------------------+| Low || Low || High || High || High || High |+---------------------------------------------------+6 rows in Set (0.00 sec)4.case [expr] when [value1] then [result] ... else [default] End Function:Mysql> Select Case salary when the "low" when the then ' mid ' else ' high ' End from salary;+--------

MySQL MyISAM engine and Heap engine speed performance test (1) [from heiyeluren blog] test environment CPU: Intel Pentium4 2.66 GHz Memory: 1 GB Disk: 73 GB/SCSI OS: FreeBSD 4.11 PHP: PHP 5.2.1 MySQL: MySQL 4.1.23b Preliminary work My. cnf Max_heap_table_size = 128 M Create a table Use test; ---- Store engine heap -- create table 'tbl _ heap '('id' int (11) not

Part 2nd: In-depth recommendation of engine-related algorithms-collaborative filteringThe first article in this series provides an overview of the recommendation engine, and the following articles provide an in-depth introduction to the recommended engine's algorithms and help readers implement them efficiently. In today's recommended technology and algorithms, the most widely recognized and adopted is base

Search engine technology and trends[From search engine Express]With the rapid development of the Internet and the increase of WEB information, users need to find information in the ocean of information, just like haystack, the search engine technology solves this problem (it can provide information retrieval services for users ). Currently, search

According to the perfect official statement, this time the Angelica engine was abandoned and the new-generation cube engine 3D engine was independently developed. The cube engine is specially tailored for 2.5D games to achieve a wide range of layered effects. The intelligent surface graphics system can generate infin

Efficient collaborative filtering recommendations based on Apache MahoutApache Mahout is an open-source project under the Apache Software Foundation (ASF) that provides a number of extensible machine learning domain Classic algorithms designed to help developers create smart applications more quickly and easily, and in Mahout Also added support for Apache Hadoop to enable these algorithms to run more efficiently in the cloud environment. For the installation and configuration of Apache Mahout, r

1, Elasticsearch (search engine) queryElasticsearch is a very powerful search engine that uses it to quickly query to the required data.Enquiry Category:Basic query: Query with Elasticsearch built-in query criteriaCombine queries: Combine multiple query criteria together for compound queriesFiltering: Querying at the same time, filtering data with the filter condition without affecting the score2, Elasticse

Sina launched its own cloud computing service platform, which is called App Engine like Google. According to NIST's definition of cloud computing, Google App Engine is a PAAs platform service.What services does it provide? What are the differences between Sina App Engine launched by Sina and Google? Background Cloud computing services, led by successful products

Tags: mysqlMySQL commonly used engines mainly have a few, Mrg_myisam, CSV, MYISAM, InnoDB, Memory, NDB, MYISAM, InnoDB is the most commonly used in MySQL storage engine, today mainly discusses InnoDB engine.First, what is the InnoDB engineThe InnoDB engine is another important storage engine for MySQL database, and is becoming the standard for all new releases of

My micro-workflow engine design and micro-workflow engine designI. Preface When it comes to workflows, many people will think of OA. Indeed, OA is a typical workflow application, but workflow is not limited to OA. workflow should be regarded as a basic framework software, it is mainly used for process reengineering and optimization, and has a broad application field. There are a lot of excellent open-source

OVirt v3.4 began to support hosted Engine. What is hosted engine? Very simply, the previous management node was deployed on a physical machine, and now we deploy the management node to a virtual machine, and the virtual machine runs on the compute nodes in the Ovirt virtualized environment. Previously, the management node was deployed, the compute nodes were deployed, and the compute nodes were registered t

MySQL storage engine sorting and MySQL storage engine sorting01.MyISAMDefault storage engine before MySQL 5.0. MyISAM does not support transactions or foreign keys. Its advantage is that the access speed is fast, you can use this engine to create tables for applications that do not require transaction integrity or that

Mobile Game Development Attack and Defense-1. Game Engine selection and mobile game development Attack and Defense Engine Now mobile games fire of a mess, engine is also endless in addition to leading the 3D market Unity3D, Duba 2D market Cocos2D-X, as well as illusory, Sphinx and so on, and even Sohu has developed a domestic Genesis-3D

This article first quotes a few words: "To understand the user's intention, the need to return users." ” "Portals are thinking about how to save money, not how to spend money to buy technology." ” "Search engine is not everyone can do the field, enter the threshold is relatively high." ” "It's not enough to be good, the best way is to make it to the extreme." "(Google Ten Truths) "Do search engines need to focus on" "for a fourth-ranked business, port

Could you tell me whether the discuz template engine is easy to use or the smarty template engine is easy to use? now I want to create a private equity website for a customer. as per the customer's requirements, I have to write a program by myself. If you want to separate templates and programs, I can see that only smarty and disucz are used more often on the Internet. I have the following questions: 1. W

[1] DefinitionThe browser kernel is divided into two parts rendering engine and JS engine, because the JS engine becomes more and more independent, the kernel tends to refer to only the rendering engineThe rendering engine is a tool that parses an HTML document and displays it on a page[2] Common engineRendering

The rapid growth of information, so that search engines become the preferred tool for people to find information, Google, Baidu, China search and other large search engines have been the topic of discussion. With the increasing value of the search market, more and more companies to develop their own search engine, Alibaba's business opportunities search, 8848 of shopping search and so on, naturally, search engine