def get_one(self, where=None, vars=None, what='*', limit=None, order=None, group=None, offset=None): self._reconnection() if (isinstance(where, dict)): where = sqlwhere(where) query = self.db.select(self._table_name, where=where, vars=vars, what=what, limit=1, order=order, group=group, offset=0); if query and len(query) > 0 : return query.list().pop() else: return None
def count(self, where=None):
if (isinstance(where, dict)):
where = sqlwhere(where)
if not where:
where = None
query = self.get_one(where, what="COUNT(*) AS NUM");
if query:
return query["NUM"];
else:
return 0;
def select(self, where=None, vars = None, what='*', limit = None, order = None, group = None, offset=None):
self._reconnection()
'''
Selects `what` from `tables` with clauses `where`, `order`,
`group`, `limit`, and `offset`. Uses vars to interpolate.
Otherwise, each clause can be a SQLQuery.
>>> db.select('foo', _test=True)
<sql: 'SELECT * FROM foo'>
>>> db.select(['foo', 'bar'], where="foo.bar_id = bar.id", limit=5, _test=True)
<sql: 'SELECT * FROM foo, bar WHERE foo.bar_id = bar.id LIMIT 5'>
'''
if (isinstance(where, dict)):
where = sqlwhere(where)
if not where:
where = None
return self.db.select(self._table_name, where=where, vars=vars, what=what, limit=limit, order=order, group=group, offset=offset, _test=False)
