The output of show table status
for my MySQL database has many rows in the engine column with values of InnoDB and many rows with values of NULL.
Why are some rows NULL? Shouldn't that be impossible? It is a very old database, perhaps the engine was not properly set when InnoDB was released?
Is this a problem I should try to fix?
Related: How do I know if a mysql table is using myISAM or InnoDB Engine?