Problem in methods Doctrine\DBAL\Platforms\AbstractPlatform::getDropForeignKeySQL() and Doctrine\DBAL\Platforms\AbstractPlatform::getCreateForeignKeySQL()

This methods do not receive FK name and don't put it in sql dump. While executing dump, mysql autogenerate FK names, but at the migration generation moment doctrine knowns nothing about them.

I think, doctrine must generate this names and put it into the schema.

Autogenerated migrations in mysql with fk are unusable.

Doctrine migrations:migrate in current doctrine version:
up:
ALTER TABLE Catalog_Field ADD CONSTRAINT FOREIGN KEY (groupId) REFERENCES Catalog_FieldGroup(id)
down:
ALTER TABLE Catalog_Field DROP FOREIGN KEY

should be:
up:
ALTER TABLE Catalog_Field ADD CONSTRAINT Catalog_Field_ibfk_2 FOREIGN KEY (groupId) REFERENCES Catalog_FieldGroup(id)
down:
ALTER TABLE Catalog_Field DROP FOREIGN KEY catalog_Field_ibfk_2

see: https://github.com/doctrine/migrations/issues/32

https://github.com/doctrine/migrations/issues/35

If you compare a column with a string type and length of null to its database value with the default length then Comparator reports a difference. It should automatically convert NULL to 255 (default for all platforms).

		$query = $this->createQueryBuilder('account')
					  ->select('account')
					  ->orderBy('account.id', 'DESC')
					  ->getQuery();

                $result = $query->setMaxResults($this->resultsPerPage+1)
        							->setFirstResult($this->offset)
        							->getResult();

The above, when using "setFirstResult" and "orderBy" (like that), results in an error like so:

SQLSTATE[42000]: [Microsoft][SQL Server Native Client 10.0][SQL Server]The multi-part identifier "t0_.id" could not be bound.

With a statement that looks something like so:

WITH outer_tbl AS (SELECT ROW_NUMBER() OVER (ORDER BY t0_.id DESC) AS "doctrine_rownum",   ...

The reason the error is occurring is because you apparently need to use the "alias" (e.g, SELECT t0_.id AS id0) "id0" in the "ORDER BY" clause.

So query will run with no problems if t0_.id as id0

WITH outer_tbl AS (SELECT ROW_NUMBER() OVER (ORDER BY id0 DESC) AS "doctrine_rownum",   ...

It looks like this behavior might only occur with Microsoft SQL Server, but it is a bug.

---------------

If you go into:
Doctrine\DBAL\Platforms\MsSqlPlatform

Find:

$over = preg_replace('/\"[^,]*\".\"([^,]*)\"/i', '"inner_tbl"."$1"', $orderby);

Add before:

                    # Get Columns
                    $columns = array();
                    if(preg_match_all('/([a-zA-Z][0-9]+_\.[a-zA-Z0-9\-_]+)\sAS\s([a-zA-Z0-9\-\_]+)/', $query, $matched)) {
                        for($i=0; $i<count($matched[1]); ++$i)
                        {
                            $columns[$matched[1][$i]] = $matched[2][$i];
                        }
                    }
                    
                    # Replace columns with their alias in the "orderby" statement
                    if(preg_match_all('/([a-zA-Z][0-9]+_\.[a-zA-Z0-9\-_]+)\s/i', $orderby, $matches)) {
                        foreach($matches[1] as $column) 
                        {
                            $orderby = preg_replace('/'.$column.'/', $columns[$column], $orderby);
                        }
                    }

Obviously this is a really ugly hack, but this resolves it.

Reported on https://github.com/symfony/symfony/issues/1788#issuecomment-1640104