mysql alter table default

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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 database ALTER command explanation, MySQL ALTER command explanation

MySQL database ALTER command explanation, MySQL ALTER command explanation MySQL is a Relational Database Management System. This so-called "Relational" can be understood as "tables". A Relational Database consists of one or more tables. When we need

Basic usage of ALTER TABLE command in MYSQL and speed-increasing optimization _mysql

First, basic usage 1. Add Column ALTER TABLE Tbl_name add col_name type For example, add a column of weight to the pet table, Mysql>alter table Pet Add weight int; 2. Delete Column ALTER TABLE Tbl_name drop col_

MySQL alter command use detailed _mysql

ALTER TABLE allows you to modify the structure of an existing table. For example, you can add or delete columns, create or eliminate indexes, change the type of existing columns, or rename columns or the table itself. You can also change the

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 database ALTER command description _ MySQL

MySQL is a relational database (RelationalDatabaseManagementSystem ). This article focuses on the alert commands of the mysql Database. This article is very detailed and has reference value. if you are interested, join us and learn that MySQL is a

MySQL study Note 5: alter table _ MySQL

MySQL study Note 5: modifying the table (altertable) bitsCN.com we will inevitably consider the week before creating the table. Therefore, the alter table statement is required to modify the table later. Modify table name Mysql> alter table

Mysql alter table structure: add, delete, Modify Field, adjust field order

Mysql changes the table structure: add, delete, modify, and adjust the field order to add a field: altertable 'user _ movement_log 'AddcolumnGatewayIdintnotnulldefault0AFTER 'regionid' (after which field is added) Delete the field: altertable 'user _

MySQL study Note 5: ALTER TABLE)

When creating a table, we will inevitably consider the disadvantages of weeks. Therefore, we need to use altertable to modify the TABLE statement to modify the table later. Next we will introduce it in detail. For more information, see When creating

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