how to delete data from table in mysql

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MySQL Common instructions, java,php programmers, database engineers must. Programmers Xiaoice Common Data collation

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

MySQL self-increment field reflow mysql delete table after increment field starting from 1

MyISAM Data Sheet After you delete the largest numbered record, the number is not reusable. You can use the "auto_increment=n" option to specify a self-increment initial value when building a table. Use the ALTER TABLE TABLE_NAME AUTO_INCREMENT=N

MySQL terminal (Terminal) Management database, data table, data basic operation (GO)

MySQL has a lot of visual management tools, such as "Mysql-workbench" and "sequel-pro-". Now I am writing mysql Terminal command Operation article, is to strengthen my understanding of MySQL, always better than the use of graphical understanding,

MySQL Lock table detailed

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

Copy, modify, and delete a MySQL table

Document directory MySQL table replication MySQL table modification Delete a MySQL table I didn't want to write this section, because it was very troublesome. There were many examples, which were representative, and I knew everyone was bored.

Delete multiple table data and delete associated data in MySQL

There are many ways to delete data in MySQL, the most common is to use Delete to delete the records, let me introduce the delete delete a single record and delete the multi-table associated data of some simple instances.1. Delete from T1 where

Create and delete indexes in the MySQL database

The following articles mainly describe the creation and deletion of MySQL databases, as well as the detailed parsing of indexes and changing actual table statements. If you are also popular with MySQL databases, you can click the following article

Safely delete binlog logs in MySQL, recover data using Binlog

When the database is in use, the default binlog is kept in one file (about 1.1G), resulting in a very large file, so you may need to delete some binlog log files when necessary: To delete a log file: Mode one: [Root@master-mysql data]# grep-e

MySQL Fifth study notes the operation of the data table

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

MySQL simple operation for tables and tables-insert data-delete primary key-delete table-Modify table data-delete table data

--1. Working with databasesUse Ren;--2. Create a student tableCREATE TABLE Student(Sid INT UNSIGNED PRIMARY KEY auto_increment,--UNSIGNED (unsigned) auto_increment (self-increment)Sname VARCHAR (10),--only 10 characters can be savedSaddress VARCHAR (

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