mysql modify table

This article mainly introduces the method of modifying the table structure in mysql, and analyzes in detail the methods and precautions for modifying the table structure in mysql in the form of instances, which has some reference value, for more

ALTER TABLE Syntax ALTER [IGNORE] TABLE tbl_name alter_spec [, Alter_spec ...] Alter_specification:ADD [COLUMN] create_definition [i | After column_name]or ADD [COLUMN] (create_definition, create_definition,...)or ADD INDEX [index_name] (Index_col_

DDL statement -- modify a table Modifying a table is to modify the definition of an existing table in the database. It is simple to modify a table because it does not need to reload data or affect ongoing services. MySQL uses the alter table

Mysql 3-view table structure, modify and delete data tables bitsCN. comMysql 3-view table structure, modify and delete data tables view table structure You can use DESCRIBE or show create table statements to view the TABLE structure. 1. view the

In practice, we sometimes encounter deletion and modification of database tables and databases. The following articles provide solutions to this problem, that is, use the MySQL command to correctly modify some tables and modify the table structure.

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.

MySQL table sharding Methods: MySQL I. Let me explain why Table sharding is required. When a piece of data reaches several millions, it takes more time for you to query the data at a time. If there is a joint query, I think it may die there. The

This article describes the MySQL modified table structure method. Share to everyone for your reference. Specifically as follows: MySQL Modify table structure using the ALTER TABLE statement, the following is a detailed description of the MySQL

MySQL data import and export:Import:Save the contents of the system file to the table in the databaseBasic format for importing data:mysql> load Data infile "file name" into table name fields terminated by ' delimiter ' lines terminated by ' \ n

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