You might be interested to know that the situation is more like "If you are not using MySQL, you probably have transactional DDL". Even SQLite has it.
According to http://wiki.postgresql.org/wiki/Transactional_DDL_in_PostgreSQL:_A_Competitive_Analysis - PostgreSQL - yes - MySQL - no; DDL causes an implicit commit - Oracle Database 11g Release 2 and above - yes (something called edition-based redefinition) - Older versions of Oracle - no; DDL causes an implicit commit - SQL Server - yes - Sybase Adaptive Server - yes - DB2 - yes - Informix - yes - Firebird (Interbase) - yes -- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To post to this group, send email to sqlalchemy@googlegroups.com. To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en.