执行事务
通过设置连接参数中的autocommit=False 参数，即可控制事务，可通过连
接的commit 方法提交事务、rollback 方法回滚事务。
from GBaseConnector import connect, GBaseError
if __name__ == '__main__':
config = {'host':'172.16.0.131',
'user':'root',
'passwd':'111111',
'port':5258,
'db':'test',
'autocommit':False,}
try:
conn = connect()
conn.connect(**config)
cur = conn.cursor()
cur.execute("DROP PROCEDURE IF EXISTS test")
cur.execute("CREATE TABLE IF NOT EXISTS test(id INT, val VARCHAR(20))")
cur.execute("INSERT INTO test VALUES(1,'hello')")
conn.rollback()
cur.execute("INSERT INTO test VALUES(2,'world')")
conn.commit()
cur.execute("SELECT * FROM test")
print cur.fetchall()
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cur.execute("DROP TABLE IF EXISTS test")
except GBaseError.DatabaseError, err:
print err
finally:
conn.close()
或者使用cur.execute("set autocommit=false")来开启一个事物。
from GBaseConnector import connect, GBaseError
if __name__ == '__main__':
config = {'host':'172.16.0.131',
'user':'root',
'passwd':'111111',
'port':5258,
'db':'test'}
try:
conn = connect()
conn.connect(**config)
cur = conn.cursor()
cur.execute("DROP PROCEDURE IF EXISTS test")
cur.execute("CREATE TABLE IF NOT EXISTS test(id INT, val VARCHAR(20))")
cur.execute("set autocommit=false")
cur.execute("INSERT INTO test VALUES(1,'hello')")
conn.rollback()
cur.execute("INSERT INTO test VALUES(2,'world')")
conn.commit()
cur.execute("SELECT * FROM test")
print cur.fetchall()
cur.execute("DROP TABLE IF EXISTS test")
except GBaseError.DatabaseError, err:
print err
finally:
conn.close()