def _py2sql(self, val):
r"""
Work around a couple of problems in SQLite that maybe pysqlite
should take care of: give it True and False and it thinks
they're column names; give it Unicode and it tries to insert
it in, possibly, ASCII.
>>> meth = SqliteDB(db='nonexistent')._py2sql
>>> [meth(x) for x in [True, False, 1, 2, 'foo', u'souffl\xe9']]
[1, 0, 1, 2, 'foo', 'souffl\xc3\xa9']
"""
if val is True: return 1
elif val is False: return 0
elif isinstance(val, unicode): return val.encode(self.encoding)
else: return val
python类insert()的实例源码
def insert(self, tablename, seqname=None, _test=False, **values):
"""
Inserts `values` into `tablename`. Returns current sequence ID.
Set `seqname` to the ID if it's not the default, or to `False`
if there isn't one.
>>> db = DB(None, {})
>>> q = db.insert('foo', name='bob', age=2, created=SQLLiteral('NOW()'), _test=True)
>>> q
<sql: "INSERT INTO foo (age, created, name) VALUES (2, NOW(), 'bob')">
>>> q.query()
'INSERT INTO foo (age, created, name) VALUES (%s, NOW(), %s)'
>>> q.values()
[2, 'bob']
"""
def q(x): return "(" + x + ")"
if values:
#needed for Py3 compatibility with the above doctests
sorted_values = sorted(values.items(), key=lambda t: t[0])
_keys = SQLQuery.join(map(lambda t: t[0], sorted_values), ', ')
_values = SQLQuery.join([sqlparam(v) for v in map(lambda t: t[1], sorted_values)], ', ')
sql_query = "INSERT INTO %s " % tablename + q(_keys) + ' VALUES ' + q(_values)
else:
sql_query = SQLQuery(self._get_insert_default_values_query(tablename))
if _test: return sql_query
db_cursor = self._db_cursor()
if seqname is not False:
sql_query = self._process_insert_query(sql_query, tablename, seqname)
if isinstance(sql_query, tuple):
# for some databases, a separate query has to be made to find
# the id of the inserted row.
q1, q2 = sql_query
self._db_execute(db_cursor, q1)
self._db_execute(db_cursor, q2)
else:
self._db_execute(db_cursor, sql_query)
try:
out = db_cursor.fetchone()[0]
except Exception:
out = None
if not self.ctx.transactions:
self.ctx.commit()
return out
def insert(self, tablename, seqname=None, _test=False, **values):
"""
Inserts `values` into `tablename`. Returns current sequence ID.
Set `seqname` to the ID if it's not the default, or to `False`
if there isn't one.
>>> db = DB(None, {})
>>> q = db.insert('foo', name='bob', age=2, created=SQLLiteral('NOW()'), _test=True)
>>> q
<sql: "INSERT INTO foo (age, name, created) VALUES (2, 'bob', NOW())">
>>> q.query()
'INSERT INTO foo (age, name, created) VALUES (%s, %s, NOW())'
>>> q.values()
[2, 'bob']
"""
def q(x): return "(" + x + ")"
if values:
_keys = SQLQuery.join(values.keys(), ', ')
_values = SQLQuery.join([sqlparam(v) for v in values.values()], ', ')
sql_query = "INSERT INTO %s " % tablename + q(_keys) + ' VALUES ' + q(_values)
else:
sql_query = SQLQuery(self._get_insert_default_values_query(tablename))
if _test: return sql_query
db_cursor = self._db_cursor()
if seqname is not False:
sql_query = self._process_insert_query(sql_query, tablename, seqname)
if isinstance(sql_query, tuple):
# for some databases, a separate query has to be made to find
# the id of the inserted row.
q1, q2 = sql_query
self._db_execute(db_cursor, q1)
self._db_execute(db_cursor, q2)
else:
self._db_execute(db_cursor, sql_query)
try:
out = db_cursor.fetchone()[0]
except Exception:
out = None
if not self.ctx.transactions:
self.ctx.commit()
return out
def insert(self, tablename, seqname=None, _test=False, **values):
"""
Inserts `values` into `tablename`. Returns current sequence ID.
Set `seqname` to the ID if it's not the default, or to `False`
if there isn't one.
>>> db = DB(None, {})
>>> q = db.insert('foo', name='bob', age=2, created=SQLLiteral('NOW()'), _test=True)
>>> q
<sql: "INSERT INTO foo (age, name, created) VALUES (2, 'bob', NOW())">
>>> q.query()
'INSERT INTO foo (age, name, created) VALUES (%s, %s, NOW())'
>>> q.values()
[2, 'bob']
"""
def q(x): return "(" + x + ")"
if values:
_keys = SQLQuery.join(values.keys(), ', ')
_values = SQLQuery.join([sqlparam(v) for v in values.values()], ', ')
sql_query = "INSERT INTO %s " % tablename + q(_keys) + ' VALUES ' + q(_values)
else:
sql_query = SQLQuery(self._get_insert_default_values_query(tablename))
if _test: return sql_query
db_cursor = self._db_cursor()
if seqname is not False:
sql_query = self._process_insert_query(sql_query, tablename, seqname)
if isinstance(sql_query, tuple):
# for some databases, a separate query has to be made to find
# the id of the inserted row.
q1, q2 = sql_query
self._db_execute(db_cursor, q1)
self._db_execute(db_cursor, q2)
else:
self._db_execute(db_cursor, sql_query)
try:
out = db_cursor.fetchone()[0]
except Exception:
out = None
if not self.ctx.transactions:
self.ctx.commit()
return out
def insert(self, tablename, seqname=None, _test=False, **values):
"""
Inserts `values` into `tablename`. Returns current sequence ID.
Set `seqname` to the ID if it's not the default, or to `False`
if there isn't one.
>>> db = DB(None, {})
>>> q = db.insert('foo', name='bob', age=2, created=SQLLiteral('NOW()'), _test=True)
>>> q
<sql: "INSERT INTO foo (age, name, created) VALUES (2, 'bob', NOW())">
>>> q.query()
'INSERT INTO foo (age, name, created) VALUES (%s, %s, NOW())'
>>> q.values()
[2, 'bob']
"""
def q(x): return "(" + x + ")"
if values:
_keys = SQLQuery.join(values.keys(), ', ')
_values = SQLQuery.join([sqlparam(v) for v in values.values()], ', ')
sql_query = "INSERT INTO %s " % tablename + q(_keys) + ' VALUES ' + q(_values)
else:
sql_query = SQLQuery(self._get_insert_default_values_query(tablename))
if _test: return sql_query
db_cursor = self._db_cursor()
if seqname is not False:
sql_query = self._process_insert_query(sql_query, tablename, seqname)
if isinstance(sql_query, tuple):
# for some databases, a separate query has to be made to find
# the id of the inserted row.
q1, q2 = sql_query
self._db_execute(db_cursor, q1)
self._db_execute(db_cursor, q2)
else:
self._db_execute(db_cursor, sql_query)
try:
out = db_cursor.fetchone()[0]
except Exception:
out = None
if not self.ctx.transactions:
self.ctx.commit()
return out
def insert(self, tablename, seqname=None, _test=False, **values):
"""
Inserts `values` into `tablename`. Returns current sequence ID.
Set `seqname` to the ID if it's not the default, or to `False`
if there isn't one.
>>> db = DB(None, {})
>>> q = db.insert('foo', name='bob', age=2, created=SQLLiteral('NOW()'), _test=True)
>>> q
<sql: "INSERT INTO foo (age, name, created) VALUES (2, 'bob', NOW())">
>>> q.query()
'INSERT INTO foo (age, name, created) VALUES (%s, %s, NOW())'
>>> q.values()
[2, 'bob']
"""
def q(x): return "(" + x + ")"
if values:
_keys = SQLQuery.join(values.keys(), ', ')
_values = SQLQuery.join([sqlparam(v) for v in values.values()], ', ')
sql_query = "INSERT INTO %s " % tablename + q(_keys) + ' VALUES ' + q(_values)
else:
sql_query = SQLQuery("INSERT INTO %s DEFAULT VALUES" % tablename)
if _test: return sql_query
db_cursor = self._db_cursor()
if seqname is not False:
sql_query = self._process_insert_query(sql_query, tablename, seqname)
if isinstance(sql_query, tuple):
# for some databases, a separate query has to be made to find
# the id of the inserted row.
q1, q2 = sql_query
self._db_execute(db_cursor, q1)
self._db_execute(db_cursor, q2)
else:
self._db_execute(db_cursor, sql_query)
try:
out = db_cursor.fetchone()[0]
except Exception:
out = None
if not self.ctx.transactions:
self.ctx.commit()
return out
def insert(self, tablename, seqname=None, _test=False, **values):
"""
Inserts `values` into `tablename`. Returns current sequence ID.
Set `seqname` to the ID if it's not the default, or to `False`
if there isn't one.
>>> db = DB(None, {})
>>> q = db.insert('foo', name='bob', age=2, created=SQLLiteral('NOW()'), _test=True)
>>> q
<sql: "INSERT INTO foo (age, name, created) VALUES (2, 'bob', NOW())">
>>> q.query()
'INSERT INTO foo (age, name, created) VALUES (%s, %s, NOW())'
>>> q.values()
[2, 'bob']
"""
def q(x):
return "(" + x + ")"
if values:
_keys = SQLQuery.join(values.keys(), ', ')
_values = SQLQuery.join([sqlparam(v) for v in values.values()], ', ')
sql_query = "INSERT INTO %s " % tablename + q(_keys) + ' VALUES ' + q(_values)
else:
sql_query = SQLQuery(self._get_insert_default_values_query(tablename))
if _test: return sql_query
db_cursor = self._db_cursor()
if seqname is not False:
sql_query = self._process_insert_query(sql_query, tablename, seqname)
if isinstance(sql_query, tuple):
# for some databases, a separate query has to be made to find
# the id of the inserted row.
q1, q2 = sql_query
self._db_execute(db_cursor, q1)
self._db_execute(db_cursor, q2)
else:
self._db_execute(db_cursor, sql_query)
try:
out = db_cursor.fetchone()[0]
except Exception:
out = None
if not self.ctx.transactions:
self.ctx.commit()
return out
def insert(self, tablename, seqname=None, _test=False, **values):
"""
Inserts `values` into `tablename`. Returns current sequence ID.
Set `seqname` to the ID if it's not the default, or to `False`
if there isn't one.
>>> db = DB(None, {})
>>> q = db.insert('foo', name='bob', age=2, created=SQLLiteral('NOW()'), _test=True)
>>> q
<sql: "INSERT INTO foo (age, name, created) VALUES (2, 'bob', NOW())">
>>> q.query()
'INSERT INTO foo (age, name, created) VALUES (%s, %s, NOW())'
>>> q.values()
[2, 'bob']
"""
def q(x): return "(" + x + ")"
if values:
_keys = SQLQuery.join(values.keys(), ', ')
_values = SQLQuery.join([sqlparam(v) for v in values.values()], ', ')
sql_query = "INSERT INTO %s " % tablename + q(_keys) + ' VALUES ' + q(_values)
else:
sql_query = SQLQuery(self._get_insert_default_values_query(tablename))
if _test: return sql_query
db_cursor = self._db_cursor()
if seqname is not False:
sql_query = self._process_insert_query(sql_query, tablename, seqname)
if isinstance(sql_query, tuple):
# for some databases, a separate query has to be made to find
# the id of the inserted row.
q1, q2 = sql_query
self._db_execute(db_cursor, q1)
self._db_execute(db_cursor, q2)
else:
self._db_execute(db_cursor, sql_query)
try:
out = db_cursor.fetchone()[0]
except Exception:
out = None
if not self.ctx.transactions:
self.ctx.commit()
return out
