mysql alter multiple tables

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MySQL command modify table structure ALTER TABLE syntax

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_

MySQL alter table structure alter, from: http://waryist.javaeye.com/blog/104739 waryist blog

  From: http://waryist.javaeye.com/blog/104739Waryist blog    Alter [ignore] Table tbl_name alter_spec [, alter_spec...]Alter_specification:Add [column]

MySQL alter TABLE Structure

The following articles mainly describe the actual operations of modifying the alter TABLE structure in MySQL. If you are interested in the actual operations of modifying the alter TABLE structure in MySQL, you can browse the following articles, the

MySQL ALTER TABLE modify tables command organize _mysql

The MySQL ALTER TABLE command is used to modify the table structure, such as adding/modifying/deleting fields, indexes, primary keys, and so on, and this article introduces the use of the MySQL ALTER TABLE statement through an example, The MySQL

MySQL DDL (CREATE ALTER DROP)

DDL: Data Definition languageCREATEAlterDROPThe main operations focus on databases and tables.Database:To create a database:CREATE datebase| SCHEMA [IF not EXISTS] dbnane [create_specification];Create_sepecification[DEFAULT] CHARACTER Set [=]

Lock tables and unlock tables in MySQL

LOCK TABLES     tbl_name [AS alias] {READ [LOCAL] | [LOW_PRIORITY] WRITE}     [, tbl_name [AS alias] {READ [LOCAL] | [LOW_PRIORITY] WRITE}] ... UNLOCK TABLES Lock tables can lock the table used for the current thread. If the table is locked by other

MySQL ALTER TABLE modify tables command details _mysql

The MySQL alter syntax is as follows: ALTER [IGNORE] TABLE tbl_name alter_spec [, Alter_spec ...] Alter_specification: ADD [COLUMN] create_definition [a] After column_name] or ADD INDEX [index_name] (index_col_name,...) or ADD PRIMARY

Mysql-5-basic operations for data tables, mysql-5-basic operations

Mysql-5-basic operations for data tables, mysql-5-basic operations1. create a table: Before using database database_name, create table name (); For example, create an employee table tb_employee1 with the following structure: Field name

MySQL performance tuning and Architecture Design-Chapter 1 Performance Design-MySQL Replication and replication Optimization

MySQL performance tuning and Architecture Design-Chapter 1 Performance Design-MySQL Replication and replication Optimization Chapter 1 scalability design-MySQL Replication Preface: MySQL Replication is a unique feature of MySQL. It can completely

Mysql,mysqldump, exporting, compressing export mysqlhotcopy restore tables

Mysql,mysqldump, exporting, exporting tables, compressing export mysql,mysqlhotcopy,mysql restoring tables This article discusses MySQL's backup and recovery mechanism, and how to maintain data tables, including the two most important types of

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