DDL statements in an empty transaction are allowed. That is; if the connection is in
AutoCommit=false mode and no other statement has been executed, then executing a DDL statement
or a DDL batch is allowed.
AUTO_COMMIT_TRANSACTION
DDL statements automatically cause the current transaction to be committed and the DDL
statement is subsequently executed without a transaction. This is equal to how MySQL and Oracle
behave.
FAIL
All DDL statements in a read/write transaction fail.