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1. time () function/* time-Gets the current calendar times of the computer system (Calender-time) * the function that processes DateTime is based on the return value of this function * * function prototype: * #include * *

1. Download the installation file from the Internet (here I download a MySQL binary distribution)Http://dev.mysql.com/downloads/index.html 2. Upload the file to the host through securecrtCopy mysql-3.23.58-pc-linux-i686.tar to C:/program

1. Login:Mysql-u username-pShow all databases:show databases;Use a database:Use DatabaseName;Show all tables for a database:Show tables;Exit:Quitdeleting databases and data tablesMysql>drop database name;Mysql>drop table Data Sheet name;User-Related:

reprinted from: Hadoop Log Cleaning 1.1 Data Situation review There are two parts to the forum data: (1) Historical data of about 56GB, statistics to 2012-05-29. This also shows that before 2012-05-29, the log files were in a file, using the

Website Log Analysis Project case (i) Project description: http://www.cnblogs.com/edisonchou/p/4449082.html Website Log Analysis Project case (ii) Data cleansing: Current Page Website Log Analysis Project case (iii) statistical analysis:

mysql| Notes | data | database I've been working on Informix and Oracle database development, and one day I found a small, chic database on the web that was widely used, and I downloaded its database software from MySQL's website

/** * Write text content to a TXT file * @ Param Filecontent */ Public Void Writeresultfile (string filecontent ){ // File storage directory String filedir = Constdefine. file_dir; // File Name String filename = New Simpledateformat

MySQL study note _ 2_MySQL create a data table (on) and study note _ 2_mysqlCreate a data table (on) in MySQL) I. Create an SQL statement model for a data table [weak type] CREATETABLE [if not exists] Table Name ( Type of field name 1 column

MySQL study note _ 2_MySQL create a data table (on)Create a data table (on) in MySQL) I. Create an SQL statement model for a data table [weak type]   CREATETABLE [if not exists] Table Name ( Type of field name 1 column [attribute] [Index], Type of

Create a data table (on) in MySQL) I. Create an SQL statement model for a data table [weak type] Create table [if not exists] TABLE Name ( Type of field name 1 column [attribute] [Index], Type of field name 2 column [attribute] [Index], ... Type of