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MariaDB server is a community developed fork of MySQL server. Started by core members of the original MySQL team, MariaDB actively works with outside developers to deliver the most featureful, stable, and sanely licensed open SQL server in the industry.
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69aee07373
Between 5.0 and 5.1, the step of incrementing the global query id changed, which broke how the profiler noticed when a new query had started. That reset the state list and caused all but the last five (or so) states to be thrown away. Now, don't watch for query_id changes in the lower level. Add a bogus state change at the end of profiling so that the last real state change is timed. Emit source reference for the start of the span of time instead of the end of it. mysql-test/r/profiling.result: Add a test that shows continuation of execution with multi-statement packets. mysql-test/t/profiling.test: Add a test that shows continuation of execution with multi-statement packets. sql/sql_parse.cc: Insert profiling calls at beginnings and ends of each query. Remove the old way of keeping or discarding profiles, and flipping to new query profiles. sql/sql_profile.cc: No longer use the thread's query_id to determine when we flip to a new statement. Some status statements are set to be NULL in the server. We don't log those, as it doesn't fit this style of profiling yet. Rewrite the parser code to be more active and legible. Relying on passive/lazy discovery of new queries was buggy. Add a bogus status change before ending a profile, so that the previous real status has a endpoint. Emit source reference of the start of the span-of-time instead of the end of it. sql/sql_profile.h: Store the server_query_id at instantiation time for a new query. Rewrite the parser code to be more active. Relying on passive/lazy discovery of new queries was buggy. Name first state to more honestly describe the state. We don't really know of initialization that will follow. sql/sql_show.cc: Update comment to note the decidedly weird field_length behavior on Decimal types in information_schema. |
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| README | ||
This is a release of MySQL, a dual-license SQL database server. MySQL is brought to you by the MySQL team at MySQL AB. License information can be found in these files: - For GPL (free) distributions, see the COPYING file and the EXCEPTIONS-CLIENT file. - For commercial distributions, see the LICENSE.mysql file. For further information about MySQL or additional documentation, see: - The latest information about MySQL: http://www.mysql.com - The current MySQL documentation: http://dev.mysql.com/doc Some manual sections of special interest: - If you are migrating from an older version of MySQL, please read the "Upgrading from..." section first! - To see what MySQL can do, take a look at the features section. - For installation instructions, see the Installing and Upgrading chapter. - For the new features/bugfix history, see the Change History appendix. - For the currently known bugs/misfeatures (known errors) see the Problems and Common Errors appendix. - For a list of developers and other contributors, see the Credits appendix. A local copy of the MySQL Reference Manual can be found in the Docs directory in GNU Info format. You can also browse the manual online or download it in any of several formats at the URL given earlier in this file. ************************************************************ IMPORTANT: Bug or error reports should be sent to http://bugs.mysql.com.