mysql copy data from one table to another

This section is looking for a new job, today's interview, to do a set of questions, which encountered such a sentence, copy all the data from one table to another table of SQL?Originally I rarely use, also did not pay attention to this problem,

Copying is very simple for MyISAM and completely 100% risky (near suicidal) with InnoDB.From your question, your brought upcp /db1/mytable.frm /db2/mytable.frmMyISAMthis is OK to do. However, you cannot just move the. frm. You must move all

MySQL常用指令，java，php程序员，数据库工程师必备。程序员小冰常用资料整理MySQL common commands (for reference)The most common display commands are:1. Display the list of databases.show databases;2. Display the data table in the library:Use MySQL;Show tables;3, display the

In MySQL, bulk importing data from one table to another in the case of web development or application development, we often encounter situations where it is necessary to bulk import data from a MySQL table into another table, and sometimes even to

MySQL master-slave Copy Data Summary1. Replication Principle As shown in 1.png:     The first part of this process is that the master records binary logs. Before each Transaction Completes data update, the master will record these changes in the

In order to better optimize MySQL in high concurrency, it is necessary to understand the locking table mechanism when MySQL query is updated.I. OverviewMySQL has three levels of Lock: page level, table level, row level.MyISAM and MemoryStorageThe

Document category: Database Keyword: MySQL master slave Recently, due to project requirements, Mysql Data Synchronization has been set on Linux servers. Fortunately, there are a lot of network resources, and Google has all of them, but the actual

This is what I write when I write a table that imports data from one database to another. Copy codeThe Code is as follows: Header ("Content-type: text/html; charset = UTF-8 "); $ Conn = mysql_connect ("localhost", "root ","");Mysql_select_db ('nnd',

MySQL creates a table and creates a . frm file to save the table and column definitions. The index is stored in one . MYI (Myindex) and the data is stored in the . MYD (MYData) file extension. First, using Show/describe statement to display the data

This is what I wrote today when I wrote a table that would import a database's table data into another database. Copy Code code as follows: Header ("Content-type:text/html;charset=utf-8"); $conn = mysql_connect ("localhost",