MySQL

Questions: When the JSP page is transferred to the MySQL database, the Chinese is garbled (garbled in the database).Workaround:1. Set all the related encodings to UTF8 (utf-8).Set database encoding: command line execution:mysql> show variables like '

1. Kill the MYSQLD processKillall mysqld2. Start with the following commandMysqld_safe–skip-grant-tables3. Copy a terminal, empty password way into MySQLMysql-u root mysql> show databases;     mysql> use MySQL;     Show tables; Mysql> select * from

Our commonly used SQL statements need to be compiled first and then executed, while stored procedures are a set of SQL statements for specific functions that are compiled directly into the database, and the user can invoke the stored procedure by

The difference between the where and having clauses in MySQLthe use of havingHaving words allows us to filter the various data after the group, where the words are filtered before aggregation, that is, before group by and having a sentence. The

For MySQL data fragmentation, in fact, and we delete the data is closely related to the deletion of data when the data file will inevitably create a discontinuous blank space, for a small amount of data deletion, and will not produce much white

and in Span style= "Font-family:verdana; Background-color:white ">mysql ? 5.5 innodb table, under no circumstances allowed truncate operation, and error ( error 1701 Export Database Data bits . SQL file. Open the file

Using partitioned data tables:Partitioned data tables and merge data tables have similar effects, but partitioned data tables are really a data table, unlike merge, which lists the logical relationships of a data table, and the partitioned data

First, we're going to build a MySQL database connection in the STS. 1. When click OK, if there is no error, it should be established, we can click to view all the tables in this database We can then perform the database operation of STS, as

Recently try to install MySQL in My computer so the I can practise some SQL statement on sever. But there is some problem while the install MySQL package in my Ubuntu system. I Hava tried lots of ways to move on. At the last. I Find There is

1. MySQL 5.1 Reference Manual2. Basic Tutorials3, commonly used examples into the following:1 Connect to the database:MySQL-H Host Address-u user name-P user password2 Prompt for database:MySQL> 3 Exit Database:Exit(carriage return)4Display database:

Trigger statements exported in multiple sql: DROP TRIGGER IF EXISTS ' t_trig ';D elimiter//create TRIGGER ' T_trig ' before INSERT on ' t_goods ' for each RO W Beginset new.add_date = current_date (); INSERT into test2 SET a2 = new.id;end//delimiter;

If you want to add a column to a table that has already been built, you can use the following example:ALTER TABLE t1 add column addr varchar (a) not null;This statement adds a column of addr to the existing table T1, which is the last column in the

[Email protected] fangwei]# CD Mysql-connector-c-6.0.2-linux-sles10-x86-64bit[Email protected] mysql-connector-c-6.0.2-linux-sles10-x86-64bit]# cmake-dcmake_install_prefix=/opt/mysql/-

http://blog.micxp.com/index.php/archives/113/ MySQL Remote connection error (HY000): Lost connection to MySQL server @ ' Waiting for initial communication packet ', system error:0 Error, the solution is as follows. There is another problem, I also

1.mysql Service failed to start, reported 1067 errorSolution:1). Add a new My.ini file to the MySQL server decompression directory with the following content[Mysqld]# set Basedir to installation path, e.g., c:/mysql# Set the installation directory

Package sql:create procedure p1 () Beginselect * from T_news;end $ MySQL stored procedure Simple instanceDisplay Stored procedure information: \g (horizontal table with vertical table output)Delimiter $ change execution symbol until MySQL encounters

Because some record rows have been deleted, the self-increment field is not contiguous, and the Reflow or zeroing method is:Method 1:TRUNCATE TABLE nameThis will not only reposition the field of the increment, but also the table data are all deleted,

MySQL Replication configuration1, modify the host (Master) configuration file (MY.CNF)server_id = 1Log_bin = Mysql-bin2. Modify the Slave (slave) configuration file#主备环境下需要唯一server_id = 23. The host creates replication distribution users and

MySQL master-slave configuration, mysql master-slave Configuration1. Configure the master database. Assume that the master database IP address is 192.168.1.1. modify my. cnf and add the configuration server-id = 1 under [mysqld ].Log-bin = syslog ###

Xin Xing makes mysql run faster. The second part is the index. If we regard our database information as a book or dictionary, the index can be understood as its directory. If we create an excellent directory, We will retrieve the information much