
from django.db.models.fields import AutoField


class UnsignedBigIntAutoField(AutoField):
    """
    An unsigned 8-byte integer for auto-incrementing primary keys.
    """
    def db_type(self, connection):
        if connection.settings_dict['ENGINE'] == 'django.db.backends.mysql':
            return "bigint UNSIGNED AUTO_INCREMENT"
        elif connection.settings_dict['ENGINE'] == 'django.db.backends.sqlite3':
            # Sqlite will only auto-increment the ROWID column. Any INTEGER PRIMARY KEY column
            # is an alias for that (https://www.sqlite.org/autoinc.html). An unsigned integer
            # isn't an alias for ROWID, so we have to give up on the unsigned part.
            return "integer"
        elif connection.settings_dict['ENGINE'] == 'django.db.backends.postgresql_psycopg2':
            # Pg's bigserial is implicitly unsigned (doesn't allow negative numbers) and
            # goes 1-9.2x10^18
            return "BIGSERIAL"
        else:
            return None


from django.db.models.fields import AutoField


class UnsignedBigIntAutoField(AutoField):
    """
    An unsigned 8-byte integer for auto-incrementing primary keys.
    """
    def db_type(self, connection):
        if connection.settings_dict['ENGINE'] == 'django.db.backends.mysql':
            return "bigint UNSIGNED AUTO_INCREMENT"
        elif connection.settings_dict['ENGINE'] == 'django.db.backends.sqlite3':
            # Sqlite will only auto-increment the ROWID column. Any INTEGER PRIMARY KEY column
            # is an alias for that (https://www.sqlite.org/autoinc.html). An unsigned integer
            # isn't an alias for ROWID, so we have to give up on the unsigned part.
            return "integer"
        elif connection.settings_dict['ENGINE'] == 'django.db.backends.postgresql_psycopg2':
            # Pg's bigserial is implicitly unsigned (doesn't allow negative numbers) and
            # goes 1-9.2x10^18
            return "BIGSERIAL"
        else:
            return None

    def rel_db_type(self, connection):
        if connection.settings_dict['ENGINE'] == 'django.db.backends.mysql':
            return "bigint UNSIGNED"
        elif connection.settings_dict['ENGINE'] == 'django.db.backends.sqlite3':
            return "integer"
        elif connection.settings_dict['ENGINE'] == 'django.db.backends.postgresql_psycopg2':
            return "BIGSERIAL"
        else:
            return None

Add a rel_db_type to UnsignedBigIntAutoField
Add a rel_db_type to UnsignedBigIntAutoField

  
  from django.db.models.fields import AutoField
  
  
  class UnsignedBigIntAutoField(AutoField):
      """
      An unsigned 8-byte integer for auto-incrementing primary keys.
      """
      def db_type(self, connection):
          if connection.settings_dict['ENGINE'] == 'django.db.backends.mysql':
              return "bigint UNSIGNED AUTO_INCREMENT"
          elif connection.settings_dict['ENGINE'] == 'django.db.backends.sqlite3':
              # Sqlite will only auto-increment the ROWID column. Any INTEGER PRIMARY KEY column
              # is an alias for that (https://www.sqlite.org/autoinc.html). An unsigned integer
              # isn't an alias for ROWID, so we have to give up on the unsigned part.
              return "integer"
          elif connection.settings_dict['ENGINE'] == 'django.db.backends.postgresql_psycopg2':
              # Pg's bigserial is implicitly unsigned (doesn't allow negative numbers) and
              # goes 1-9.2x10^18
              return "BIGSERIAL"
          else:
              return None
  
+     def rel_db_type(self, connection):
+         if connection.settings_dict['ENGINE'] == 'django.db.backends.mysql':
+             return "bigint UNSIGNED"
+         elif connection.settings_dict['ENGINE'] == 'django.db.backends.sqlite3':
+             return "integer"
+         elif connection.settings_dict['ENGINE'] == 'django.db.backends.postgresql_psycopg2':
+             return "BIGSERIAL"
+         else:
+             return None
+ 
Add a rel_db_type to UnsignedBigIntAutoField
## Code Before:

from django.db.models.fields import AutoField


class UnsignedBigIntAutoField(AutoField):
    """
    An unsigned 8-byte integer for auto-incrementing primary keys.
    """
    def db_type(self, connection):
        if connection.settings_dict['ENGINE'] == 'django.db.backends.mysql':
            return "bigint UNSIGNED AUTO_INCREMENT"
        elif connection.settings_dict['ENGINE'] == 'django.db.backends.sqlite3':
            # Sqlite will only auto-increment the ROWID column. Any INTEGER PRIMARY KEY column
            # is an alias for that (https://www.sqlite.org/autoinc.html). An unsigned integer
            # isn't an alias for ROWID, so we have to give up on the unsigned part.
            return "integer"
        elif connection.settings_dict['ENGINE'] == 'django.db.backends.postgresql_psycopg2':
            # Pg's bigserial is implicitly unsigned (doesn't allow negative numbers) and
            # goes 1-9.2x10^18
            return "BIGSERIAL"
        else:
            return None

## Instruction:
Add a rel_db_type to UnsignedBigIntAutoField
## Code After:

from django.db.models.fields import AutoField


class UnsignedBigIntAutoField(AutoField):
    """
    An unsigned 8-byte integer for auto-incrementing primary keys.
    """
    def db_type(self, connection):
        if connection.settings_dict['ENGINE'] == 'django.db.backends.mysql':
            return "bigint UNSIGNED AUTO_INCREMENT"
        elif connection.settings_dict['ENGINE'] == 'django.db.backends.sqlite3':
            # Sqlite will only auto-increment the ROWID column. Any INTEGER PRIMARY KEY column
            # is an alias for that (https://www.sqlite.org/autoinc.html). An unsigned integer
            # isn't an alias for ROWID, so we have to give up on the unsigned part.
            return "integer"
        elif connection.settings_dict['ENGINE'] == 'django.db.backends.postgresql_psycopg2':
            # Pg's bigserial is implicitly unsigned (doesn't allow negative numbers) and
            # goes 1-9.2x10^18
            return "BIGSERIAL"
        else:
            return None

    def rel_db_type(self, connection):
        if connection.settings_dict['ENGINE'] == 'django.db.backends.mysql':
            return "bigint UNSIGNED"
        elif connection.settings_dict['ENGINE'] == 'django.db.backends.sqlite3':
            return "integer"
        elif connection.settings_dict['ENGINE'] == 'django.db.backends.postgresql_psycopg2':
            return "BIGSERIAL"
        else:
            return None
