Jira issue originally created by user erichard:
The schemaTool fail with a Doctrine\DBAL\Schema\SchemaException when trying to handle ManyToMany relation with an existing joinTable.
My use case :
I'm using the Tree DoctrineExtension with the Closure strategy. It create a mapping between my Category entity and a CategoryClosure entity.
For conveniency, I've setup a ManyToMany relation between Category and Category with the CategoryClosure table as joinTable.
Doctrine ORM handle perfectly this case but the schema tool is failing with :
The table with name 'category_closure' already exists.
Issue was closed with resolution "Won't Fix"
Comment created by @asm89:
You can't expect the schematool to play nice if you use the table of an entity as m2m table.