Tag Archives: MySQL Utilities

MySQL Utilities meets the world’s ugliest table

In case you missed it, MySQL Utilities 1.3.0 (alpha) was released last week.  MySQL Utilities is a component of MySQL Workbench, but it’s been broken out into a separate download allowing command-line users access unencumbered by a pretty GUI interface.  Plus, it has some new features – most importantly to me, a utility (mysqlfrm) which can read .FRM files and produce CREATE TABLE statements as a result.  This will be very useful for recovery processes, in conjunction with InnoDB transportable tablespaces in situations where the InnoDB system tablespace is corrupted, and you don’t know the exact table definition.

When we first started testing the FRM reader, it didn’t bootstrap mysqld to decipher .FRM file contents – Chuck Bell spent hours staring into the abyss that is FRM file formats and trying to shed light in the many dark corners that exist.  We started with simple tests, like:  can it read all the .FRM files in the data/mysql directory?  Then I hacked a quick program that created tables with many different data types, modifiers and variants.  But these tests were all dwarfed by the contribution of my colleague and bug-finder extraordinaire, Shane Bester, who gave us what may well be the world’s ugliest table.  Behold:

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