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Additional New Functionality
In this section, you'll see more highlights of new functionality that will be introduced in MySQL 4.1. This list is not the full list of changes; for that, you can read the actual changelog entries at http://www.mysql.com/doc/en/News-4.1.xl.
- Speed enhancements. As if MySQL weren't fast enough, the developers are always finding ways to make it even faster.
- Table creation using LIKE. You can use CREATE TABLE tablename LIKE othertablename to create a new table with the exact structure (but no data) as an existing table.
- Usability enhancements, primarily a help system within the MySQL command-line interface. Typing UCASE will provide help for the UCASE() MySQL function, for example.
- DATE/DATETIME usage will be changing slightly, in that you will no longer be able to enter data in the format of YYYYMMDD HHMMSS instead of YYYY-MM-DD HH:MM:SS; all the separators must be used.
- TIMESTAMP will be returned as a string in the YYYY-MM-DD HH:MM:SS format, instead of in microseconds.
- You will be able to specify a length for BLOB and TEXT fields, and by doing so, MySQL will autmatically change it to its appropriate type.
- Per-column comments can now be added, and SHOW FULL COLUMNS FROM tablename will display these comments.
- Spatial extensions will be available to allow the generation, storage, and analysis of geographic features. You can read all about this topic at http://www.mysql.com/doc/en/Spatial_extensions_in_MySQLl.
With the exception of the date-related changes mentioned earlier, none of these listed enhancements to MySQL are incompatible with previous versions. In the changelog for minor and major releases, MySQL AB will always publish a warning statement, in bold lettering, to indicate when an incompatibility is caused by a new feature.
