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Fixed #31731 -- Removed unreachable code for resetting sequences of auto-created m2m tables in sequence_reset_sql(). 

Unreachable because f.remote_field.through is truthy for all m2m
fields.

Resetting sequences of auto-created m2m tables in sequence_reset_sql()
is also unnecessary:
 - in sqlsequencereset since c39ec6dccb
   because auto-created tables are included in model_list,
 - in loaddata because there is no it need to reset sequences for
   models not loaded directly.
 - in create_default_site() because it doesn't have m2m fields.
This commit is contained in:
Ravindar Sharma 2020-07-12 18:31:06 +05:30 committed by Mariusz Felisiak
parent 5ef6f62634
commit 18d4eac7fc
2 changed files with 0 additions and 27 deletions
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12
django/db/backends/oracle/operations.py
View File

@ -494,18 +494,6 @@ END;
# Only one AutoField is allowed per model, so don't
# continue to loop
break
for f in model._meta.many_to_many:
if not f.remote_field.through:
no_autofield_sequence_name = self._get_no_autofield_sequence_name(f.m2m_db_table())
table = self.quote_name(f.m2m_db_table())
column = self.quote_name('id')
output.append(query % {
'no_autofield_sequence_name': no_autofield_sequence_name,
'table': table,
'column': column,
'table_name': strip_quotes(table),
'column_name': 'ID',
})
return output
def start_transaction_sql(self):

15
django/db/backends/postgresql/operations.py
View File

@ -185,21 +185,6 @@ class DatabaseOperations(BaseDatabaseOperations):
)
)
break # Only one AutoField is allowed per model, so don't bother continuing.
for f in model._meta.many_to_many:
if not f.remote_field.through:
output.append(
"%s setval(pg_get_serial_sequence('%s','%s'), "
"coalesce(max(%s), 1), max(%s) %s null) %s %s;" % (
style.SQL_KEYWORD('SELECT'),
style.SQL_TABLE(qn(f.m2m_db_table())),
style.SQL_FIELD('id'),
style.SQL_FIELD(qn('id')),
style.SQL_FIELD(qn('id')),
style.SQL_KEYWORD('IS NOT'),
style.SQL_KEYWORD('FROM'),
style.SQL_TABLE(qn(f.m2m_db_table()))
)
)
return output
def prep_for_iexact_query(self, x):