MySQL

The problem is that I want to obtain two adjacent rows with a row of records in a table and want to obtain them through Union, so I write: Select ID, title from subjects where ID> # some_id # order by ID limit 1UnionSelect ID, title from

  Drop table if exists timetable; Create Table timetable ( year Year (4), month int (2) unsigned zerofill, day int (2) unsigned zerofill ); insert into timetable values (, 1), , 20), (, 30), (, 2), (, 23), , 23), (, 30); /* * check the

Mysql-custom MySQL tool connection prompt 2012-08-31 One or two customization methods1 configuration file[MySQL]Prompt = "mysql>"2 Specify the option -- prompt =... 2. applicable valuesExample:Configuration File Settings: prompt = "\ U-\

During system setup, you may encounter the following requirement: count the number of times the system is used. You can store data in a data table for statistics, such Create Table counter (counter int primary key) Every time a system user logs

Recently, MySQL in Ubuntu has encountered some problems. I have not found the answer for a long time on the Internet, so I uninstalled and reinstalled it. Of course, as the title is written, encoding is also involved here.1. Uninstall When I first

When using MySQL + Asp.net for development, the problem of garbled Chinese characters written into the database is a headache. In combination with my own situation, refer to the online materials. The solution is similar to the following three

Transferred from: http://database.51cto.com/art/201005/200739.htmArticleThis section describes how to import and export SQL files from a MySQL database, that is, how to import and export SQL files from a MySQL database. This section describes how to

Use the SQL function last_insert_id () in MySQL ()Last_insert_id (): 1.The generated ID is saved on the server after each connection. This means that the value returned by the function to a given client is the first auto_increment value of the

Yesterday, the company suddenly experienced a power failure. When the server was restarted, myssql 1067 service could not be started. It took a whole day to finally save the data .~ Send a post immediately to avoid further victims:   When MySQL is

Previously, membershipprovider and roleprovider written by a foreigner were used from codeproject.comI found it on the website and it seems to be good to use it. But it does not implement the user's personalized engine, that is, it does not support

 Drop procedure if exists pro_rep_shadow_rs; delimiter | ---------------------------------- -- rep_shadow_rs -- added to process information, update and delete -- only data that has not been updated since the last time -- according to

Oracle's fast return mechanism has been very tangled. Although there are many result sets, it can quickly display the first result. Although it can be done through the mysql client, it cannot be achieved through JDBC. It took more than an hour today

Mysql-log-Basic Knowledge 1. log types: MySQL has the following types of logs:Error Log:-log-errQuery log:-LogSlow query log:-log-Slow-queriesUpdate log:-log-UpdateBinary log:-log-bin 2. Whether logs are enabled Mysql> show variables like 'Log _ % ';

SQL statements that can be used in Stored Procedures mainly include the following types: 1. No return result statements, such as insert, update, drop, and delete.2. The SELECT statement returns a single-row variable and can be passed to the local

MyISAM: First, optimization parameters This table engine only stores the index cache, not the data cache. You can set the cache size by setting key_buffer_size and key_bufer_block_size. Key_cache_division_limit is the demarcation value between hot

Currently, MySQL's extension solutions mainly include object-based memcached, high-performance embedded database programming library Berkeley dB, and powerful full-text search engine Lucene. I. Rational Use of the third-party cache solution

Tip: Error 1044 (42000): Access denied for user ''@ 'localhost' to database 'mysql '. This problem also occurred two days ago. I found a popular method on the Internet (see method 1. I tried this again today, but I was not sure. After searching for

1. Download the installation package mysql-5.1.52-osx10.6-x86.dmgfrom http://dev.mysql.com/downloads/mysql/ 2. Double-click the installation package. One of the four files is the description document. 3, first click Install

MASTER:Show Master Status;-view status:Show processlist;-view MySQL process information under slaveReset master; # Use with caution to clear logs and synchronize the position Slave end: Change master to master_log_file = 'master. 100 ′;Show slave

Server version: 5.0.21-Community-NTWhen you use Chinese,1. If the backup database contains a view, you must change character-set in my. ini to Latin1 to restore the view. 2. After restoration, change Latin1 to gb2312. Otherwise, the stored