rename table name in mysql

much easier than creating a table. 1) delete a common table [SQL] Drop table table_name; 2) delete a temporary table [SQL] Drop temporary table table_name; 3) the table is deleted only when it exists. [SQL] Drop

); Alter Table varchar (ten); Additional notes: Data type is required, but can be a new "rename field can be changed by data type" Renaming can also modify the data type, properties, and location of the field. "If the field has attributes, you can rename the field without the" To delete a field: Grammar: Alter

that the two are associated. So the foreign key must be created from the table to find the connection to the primary table , and the table is responsible for maintaining the relationship between the two.We will first use the following command to create the department table and staff

MySQL field name conflicts with reserved words and the solution, mysql Field Problem: Conflicts between MySQL field names and reserved words often occur in actual operations. Com. mysql. jdbc. exceptions. jdbc4.MySQLSyntaxErrorException. Solution: in

The purpose of modifying rename database by Information_schema information MySQL does not have rename database command, can only modify the table in disguise to the table in the target library to achieve: Stitching Reanme Tables Execution statements [Emailp

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

In the metering pump host computer software, you need to transfer data from the next computer, stored in the MySQL database, displayed in the Java host computer interface, and can be exported to the computer designated location.Select the storage path and file name: //menu for working with saved files Public voidexportexcelfile (String sql,string []paras) {string Absolutepath=""; //setting the style

MySQL adds, modifies, and deletes TABLE columns and constraints. TABLE definitions such as bitsCN. comALTER TABLE: adds, modifies, and deletes TABLE columns and constraints. View column: desc table

In Linux: the default data file storage directory of MySQL is/var/lib/mysql. I want to do two things today: Change the Database Name (three methods are tested), and change the directory location of the MySQL database. Database rename: 1.

Basic Mysql table operations and basic mysql operations 1. Create a table Syntax: create table Name ( Complete constraints on the Data Type of the attribute name, Complete constraint fo

divided into 100 tables. when 1 million users are browsing a single table, 1 million requests will be made, it is possible that 10 thousand data requests are performed for each table (because it is impossible to perform an absolute average, just assume), which reduces the pressure a lot. Mysql sharding method: http://blog.csdn.net/heirenheiren/article/details/78

Analysis of Different errors in MySQL table sorting rules and mysql table sorting rules MySQL multi-table join reports an error: [Err] 1267-Illegal mix of collations (utf8_general_ci, IMPLICIT) and (utf8_unicode_ci, IMPLICIT) for

Label: 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 table information Grammar:SHOW TABLES [from db_name] [like wil

, MySQL allows you to replace change with the modify keyword. The only difference between the two is that change must specify the names of the new and old fields at the same time. Because modify can only be used to modify the field type, it cannot change the field name, therefore, there is no concept of a new field name./* Change the ID in the nick_name