select db

The last time I encountered the problem of data consistency between the MySQL master and slave servers, I thought about it a few years ago. I vaguely remembered the panic situation. Fortunately, I finally solved the problem with Maatkit. A few years

For php paging ideas and the use of ZF, if you need a friend, you can refer to it and get only two variables to get half done: Number of records to be displayed per page $ pageSize Total data volume in the table $ rowCount With the above two

OSPF single-region ConfigurationI. Experiment objective: to understand the working principle and configuration of OSPF in a single region.Ii. Tutorial network topology: 3. Experiment steps:I. Specific configuration of R1:1. Configure the R1

Mysql Cluster data consistency check Mysql Cluster BitsCN.com Currently, mysql is in full swing in the Internet industry. many large websites are using MySQL databases to build a mysql master-slave cluster to implement high-performance and

　　The various data types supported by Redis include String,list, set, sorted set, and hash.REdis is essentially a key-value db, so let's start by looking at his key. First, the key is also a string type, but the key cannot include boundary

First, the PSpice work flowSecond, PSpice A/D basic analysis contentThe schematic diagram of the circuit needs to be drawn before the analysis method is selected, and the OrCAD Unified by the Capture window for input and call PSpice analysis. Where

First, IntroductionPt-table-checksum is one of the Percona-toolkit series tools that can be used to detect the consistency of the data in the master and from the database. The principle is to run on the Main library, checksum the synchronized tables

This article describes how to add data in batches and update data in batches in php. it involves flexible use of form processing and SQL statements, which is of great practical value, for more information about how to add and update data in batches

PHPMYSQL dynamic web page programming error correction guide. With regard to the WEB programming of databases, the role of databases has become increasingly important. When talking about databases, it should be said that PHP has very powerful

Php connects to the database and displays the desired data. This is a php getting started tutorial. it is about connecting to the database with php and displaying the required data, that is, a simple php + mysql database application instance on the

This article mainly introduces several simple examples of phpmongodb operations. For more information, see a few similar articles that have been published by my hometown. Core code: Class NewMongodb {private $ mongo; // NewMongodb connects to

The PHP database tree traversal method code is as follows: The code is as follows: Session_start ();Define ('P _ s', PATH_SEPARATOR );Define ('root ',"./");Set_include_path (ROOT. P_S. 'zend'. P_S. ROOT. get_include_path ());// Load the ZEND

Laravel: only one statement is used to identify the number of data entries corresponding to different conditions in a table: {code ...} it is concluded that the number of sex is 1 and age is 2, the number of sex is 1 and age is 5, and the number of

$conn =mysql_connect ("localhost", "root", "myoa888"); mysql_select_db ("lost63", $conn) or Die ("Select DB Error"); $sql []= "Create TABLE ' lost63 '. ' Dd_book_class ' ( ' ID ' INT not NULL auto_increment PRIMARY KEY, '

MySQL import and export the entire database as a file When using, be sure to note whether it is in the import state, if it is an import operation, you must first back up the database, otherwise the data will be emptied. /*

---------- Phpdebug ---------- Serverlocalhost; DataBasemysql; UserIDroot; PassWord123456resource (5) oftype (mysqlresult) Outputcompleted (1 secconsumed)-NormalTermination ---------- Php debug ----------Server = localhost; DataBase = mysql; UserID =

Simple use of the select querymaker join linked list in the ZF framework Db '2017. 0.0.1 ', 'username' => 'root', 'password' => '000000', 'dbname' => 'test', 'filer' => "true "); // inform Zend_Db of the database and database configuration

Before the script house has sent a few similar articles, we can refer to. Core code: Class Newmongodb {private $mongo; Newmongodb connection Private $curr _db_name; Private $curr _table_name; Private $error; public $config; Public Function

There are two ways to perform database operations in Laravel. one is to use the static method of the \ DB appearance object to directly execute SQL queries, another method is to use the static method of the Model class (in fact, it is also the

Php promise classification (recursion) implementation code. For more information, see. The code is as follows: $ Conn = mysql_connect ("localhost", "root", "myoa888 ");Mysql_select_db ("lost63", $ conn) or die ("select db error ");$ SQL [] =