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Inlined DatabaseIntrospection._table_info() for SQLite.

This commit is contained in:
Nick Pope 2019-01-18 23:24:05 +00:00 committed by Tim Graham
parent 2804b8d215
commit e19f58fc01
1 changed files with 5 additions and 22 deletions
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27
django/db/backends/sqlite3/introspection.py
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@ -83,18 +83,13 @@ class DatabaseIntrospection(BaseDatabaseIntrospection):
Return a description of the table with the DB-API cursor.description
interface.
"""
cursor.execute('PRAGMA table_info(%s)' % self.connection.ops.quote_name(table_name))
return [
FieldInfo(
info['name'],
info['type'],
None,
info['size'],
None,
None,
info['null_ok'],
info['default'],
info['pk'] == 1,
) for info in self._table_info(cursor, table_name)
name, data_type, None, get_field_size(data_type), None, None,
not notnull, default, pk == 1,
)
for cid, name, data_type, notnull, default, pk in cursor.fetchall()
]
def get_sequences(self, cursor, table_name, table_fields=()):
@ -211,18 +206,6 @@ class DatabaseIntrospection(BaseDatabaseIntrospection):
return m.group(1) if m.group(1) else m.group(2)
return None
def _table_info(self, cursor, name):
cursor.execute('PRAGMA table_info(%s)' % self.connection.ops.quote_name(name))
# cid, name, type, notnull, default_value, pk
return [{
'name': field[1],
'type': field[2],
'size': get_field_size(field[2]),
'null_ok': not field[3],
'default': field[4],
'pk': field[5], # undocumented
} for field in cursor.fetchall()]
def _get_foreign_key_constraints(self, cursor, table_name):
constraints = {}
cursor.execute('PRAGMA foreign_key_list(%s)' % self.connection.ops.quote_name(table_name))