http://www.mysqldictionary.com A Quick Reference For All Things MySQL Tue, 27 Nov 2007 16:19:13 +0000 http://backend.userland.com/rss092 en Description DRBD is a high-availability solution for MySQL that combines MySQL, Linux Heartbeat and Distributed Replicated Block Device (DRBD) for a hot-standby solution that synchronously replicates MySQL data between the primary and secondary server. The key benefit of DRBD over replication is that it enforces data synchronization between the primary and secondary ... http://www.mysqldictionary.com/concepts/drbd Definition Error 1045 is returned when a user is denied permission to connect to the MySQL server. Sample [localhost]$ mysql ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO) Resolution If the message ends with '(using password: NO)', no password was specified while connecting. Add -p to the call to the mysql ... http://www.mysqldictionary.com/error-codes/1045 Definition The SQL_CALC_FOUND_ROWS keyword is used when the result set of a query will be restricted by a LIMIT clause, instructing the MySQL server to store the number of rows that would have been returned had the result set not been restricted. The stored value is exposed through the FOUND_ROWS() function. Sample In ... http://www.mysqldictionary.com/keywords/query-keywords/sql_calc_found_rows Description Proven Scaling is a MySQL consulting company founded by Jeremy Cole and Eric Bergen. Jeremy and Eric both formerly worked at Yahoo! and Jeremy was previously over training at MySQL AB. Proven Scaling provides a variety of services from performance consulting to training and is located in the United States. Further Reference Proven ... http://www.mysqldictionary.com/companies/proven-scaling Description Paul DuBois is a Senior Technical Writer working for MySQL AB. Paul is the author of several books related to MySQL: MySQL (3rd Edition) (Developer's Library) MySQL Cookbook MySQL 5.0 Certification Study Guide (MySQL Press) MySQL and Perl for the Web (Landmark) Paul has also authored technical books unrelated to MySQL: Using csh & tcsh (Nutshell Handbooks) Software ... http://www.mysqldictionary.com/people/paul-dubois Definition Error 1033 generally points to corruption of the .frm file for the table being queried. This can be caused by InnoDB reconfiguration, form file corruption, and permissions issued. Sample SELECT COUNT(*) FROM auth; ERROR 1033 (HY000): Incorrect information in file: './auth/auth.frm Resolution Check that the permissions on /tmp/ allow for reading and writing by ... http://www.mysqldictionary.com/error-codes/1033 Definition Error 17 indicates that that either the MySQL server encountered an issue while trying to delete the directory containing the database to be dropped, or tried to create a temporary file that already existed during an ALTER TABLE statement. Sample mysql> DROP DATABASE foo; Error dropping database (can't rmdir './foo/', errno: 17) mysql> ALTER ... http://www.mysqldictionary.com/error-codes/17 Definition The WITH ROLLUP clause is used with GROUP BY queries to generate extra rows in the dataset that represent group totals. Summary rows will show NULL in the group column(s) being summarized. WITH ROLLUP will summarize multiple level of groupings, providing totals across each group level. The WITH ROLLUP clause ... http://www.mysqldictionary.com/keywords/with-rollup Definition When the MySQL server is installed as a service on Windows, it tries to use the service name mysql by default. If a previous installation was not completely removed before installing, this error can be encountered. This occurs because the mysql service already exists on the machine. Sample Cannot Create Windows ... http://www.mysqldictionary.com/error-messages/cannot-create-windows-service-for-mysql-error0 Definition In MySQL version 4.1, the authentication protocol used for MySQL client-server communications was changed to make it more secure. This changed the format of hashed user passwords and broke compatibility for all clients and APIs designed against MySQL 4.0. Sample Warning: mysql_connect(): Client does not support authentication protocol requested by server; consider ... http://www.mysqldictionary.com/error-messages/client-does-not-support-authentication-protocol-requested-by-server-consider-upgrading-mysql-client