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In some module-supplied drivers, the Module_param macro is used to define some parameters, and this macro will cause a syntax error: "../../drivers/net/dm9000.c", line 124: cc0020: error: identifier "KBUILD_MODNAME" is undefined

MySQL basic syntax:1. Create library: The name of the database;Create a library with encoded format: Create database name character set encoding format;Delete Library: drop database name;2. CREATE TABLE: Name of Creation table table (field 1 type 1,

Reprint: http://www.cnblogs.com/hellokitty1/p/4211450.htmlSQL statements:1: Create database database name;2: Use database name;3: Delete the database name of the drop databases database;4: Create TABLE table name(Constraints on column names of data

Connect to MySQLFormat: mysql-h host address-u user name-P user PasswordExample 1: Connect to MySQL on this computer.[Email protected]:~$ mysql-uroot-pmysql;Example 2: Connect to MYSQL on a remote host.[Email protected]:~$ mysql-h

1, System Management 1.1 connection MySQLformat : mysql-h host address-u user name-P user PasswordExample :Example 1: Connect to MySQL on this computer.First open the DOS window, and then enter the directory Mysqlbin, and then type the command

------------------------------------------------------------------------------------author:htl258 (Tony)--Date:2010-06-25 22:23:18--Version:microsoft SQL Server (RTM)-10.0.1600.22 (Intel X86)--Jul 9 2008 14:43:34--Copyright (c) 1988-2008 Microsoft

SQL statements:1: Create database database name;2: Use database name;3: Delete the database name of the drop databases database;4: Create TABLE table name(Constraints on column names of data types);5: Delete table name of drop tables;Delete from

Data type:Character typeChar fixed length, maximum 2000 charactersvarchar LONG, max 4000 charactersCLOB (character large object) character type large objects, Max 4GNumber TypeNumber Range (10-38 Square to 10 38-square, fractional integer

MySQL Common commandsMySQL installation directoryDatabase directory/var/lib/mysql/Configuration file/usr/share/mysql (mysql.server command and configuration file)Related commands/usr/bin (Mysqladmin mysqldump and other commands)Startup

The last time you learned to add a field to a table in a database, let's continue to learn--Modify a column field in a database tableUse databaseALTER TABLE name ALTER COLUMN type--How to delete a column field in a databaseUse databaseALTER TABLE

Connect to MySQLFormat: mysql-h host address-u user name-P user PasswordExample 1: Connect to MySQL on this computerMysql-uroot-pmysql;Example 2: Connecting to MySQL on a remote hostMysql-h 127.0.0.1-uroot-pmysql;Modify New PasswordIn Terminal input:

Linux under MySQL Insert update delete transaction user management1.INSERT INSERT statement Format:INSERT into Tb_name (Field 1, Field 2, ...) Values (value 1, value 2, ...) [, (value 1, value 2, ...),...];INSERT into table name SET field 1= value 1,

* Database concept:* Database-databases* One database contains multiple tables* Table-Tables* One table contains multiple rows and multiple columns* Row-line* One line represents a single piece of data* Column-Columns* One column represents a single

Database is based onData StructureTo organize, store, and manage the Data warehouse, which was generated more than 60 years ago, with the development of information technology and markets, especially after the 1990s, data management is no longer

I. Table structure modification (DDL)1. Add a field to the table structureA.alter Table NameADD field name data type [Field Properties | constraints][first| After field name]; B. Adding multiple fieldsALTER Table Table NameADD field name data type

A beginner of PHP's accompanying notes, record their growth!I. Table structure modification (DDL)1. Add a field to the table structureA.alter Table NameADD field name data type [Field Properties | constraints][first| After field name]; B. Adding

MySQL command line individual parameter explanationHttp://blog.51yip.com/mysql/1056.htmlUsage:mysql [OPTIONS] [Database]//Command mode-?,--help//Display assistance information and exit-I,--HELP//Display Help information and

--Mysql Database syntaxCreate DATABASE Database nameCREATE TABLE table name (ID int,name varchar (20));Copy tables and data the new table name after the CREATE table is copied select * from the old table name;Duplicate table structure CREATE table

MySQL command line argumentsUsage:mysql [OPTIONS] [Database] //Command modeFor example:Mysql-h${hostname}-p${port}-u${username}-p${password}-D ${dbname}- e "${create_table_sql}"-?,--help//Display assistance information and exit-I,--HELP//Display

1, System Management 1.1 connection MySQLformat : mysql-h host address-u user name-P user PasswordExample :Example 1: Connect to MySQL on this computer.First open the DOS window, and then enter the directory Mysqlbin, and then type the command