通过python在postgres中将表名作为参数传递

我想用python执行postgres查询。表名必须作为参数传递。因为表将在运行时创建。我使用了dict query param样式。但是我得到了一个错误

 import psycopg2

 CONNECTION_STRING = "dbname='autogist' user='postgres' password=''"
 query = "INSERT INTO %(table)s " +\
            "(vin_id, vin_details_id, price, mileage, dealer_id, created_on, modified_on) " +\
            "VALUES (%(vin_id)s, %(vlookup_id)s, %(price)s, %(mileage)s, %(dealer_id)s,now(),now()) " +\
            "RETURNING id"


params = {"table" : "dealer_vehicle_details_2010_01_02",\
                      "vin_id":"3",\
                      "vlookup_id":"403",\
                      "price":"403",\
                      "mileage":"403",\
                      "dealer_id":"276092"
                  }


 conn=psycopg2.connect(CONNECTION_STRING)
 cursor = conn.cursor(cursor_factory=psycopg2.extras.DictCursor)
 cursor.execute(query,params)

回溯：

 ERROR: An unexpected error occurred while tokenizing input
The following traceback may be corrupted or invalid
The error message is: ('EOF in multi-line statement', (262, 0))

---------------------------------------------------------------------------
 ProgrammingError                          Traceback (most recent call last)

 /home/gridlex/workspace/<ipython console> in <module>()

 /usr/local/lib/python2.6/dist-packages/psycopg2/extras.pyc in execute(self, query, vars)
121         self.index = {}
122         self._query_executed = 1
--> 123         return _cursor.execute(self, query, vars)
124 
125     def callproc(self, procname, vars=None):

ProgrammingError: syntax error at or near "E'dealer_vehicle_details_2010_01_02'"
LINE 1: INSERT INTO E'dealer_vehicle_details_2010_01_02' (vin_id, vi...

---

您发送的语句在准备时必须在语法上有效，而带有表名占位符的语句则无效。在准备好的语句中，不能对表名使用占位符

你的选择是：

用双引号的常规字符串替换替换中的表名。要非常小心你的报价程序；确保将表名中的任何引号加倍，使表名doublequote变为doublequote。例如，“从%s中选择*”\u identtablename。您必须使用自己的quote_ident，因为AFAIK psycopg2不会公开这样的函数

将表名作为查询参数发送到使用EXECUTE。。。用于使用表名创建动态SQL语句。PL/PgSQL可以使用quote_ident函数提供比自滚实现更安全的报价

---

cursor.mogrifyquery，参数插入E'dealer_vehicle_details_2010_01_02'vin_id，vin_details_id，价格，里程，dealer_id，创建，修改值E'3'，E'403'，E'403'，E'403'，E'276092'，现在，返回id