小编amo*_*sai的帖子

我试图使用以下代码将数据插入sql server表,

import pyodbc
user='sa'
password='PC#1234'
database='climate'
port='1433'
TDS_Version='8.0'
server='192.168.1.103'
driver='FreeTDS'

   con_string='UID=%s;PWD=%s;DATABASE=%s;PORT=%s;TDS=%s;SERVER=%s;driver=%s' % (user,password, database,port,TDS_Version,server,driver)
   cnxn=pyodbc.connect(con_string)
   cursor=cnxn.cursor()
   cursor.execute("INSERT INTO mytable(name,address) VALUES (%s,%s)",('thavasi','mumbai'))
   cnxn.commit()

它在执行时给我以下错误,

   Traceback (most recent call last):
  File "sql.py", line 26, in <module>
  cursor.execute("INSERT INTO mytable(name,address) VALUES (%s,%s)",('thavasi','mumbai'))
 pyodbc.ProgrammingError: ('The SQL contains 0 parameter markers, but 2 parameters were supplied', 'HY000')

我已经检查了insert语句的语法是否正确.那么是什么导致了这个错误

我有一个 PostgreSQL 表，其中有一列包含字符串数组。该行有一些唯一的数组字符串，或者一些也有重复的字符串。如果存在，我想从每一行中删除重复的字符串。

我尝试了一些查询，但无法实现。

以下是表格：

  veh_id |             vehicle_types              
 --------+----------------------------------------
      1  | {"byd_tang","volt","viper","laferrari"} 
      2  | {"volt","viper"}                        
      3  | {"byd_tang","sonata","jaguarxf"}        
      4  | {"swift","teslax","mirai"}              
      5  | {"volt","viper"}                        
      6  | {"viper","ferrariff","bmwi8","viper"}   
      7  | {"ferrariff","viper","viper","volt"}    

我期待以下输出：

  veh_id |             vehicle_types              
 --------+----------------------------------------
      1  | {"byd_tang","volt","viper","laferrari"} 
      2  | {"volt","viper"}                        
      3  | {"byd_tang","sonata","jaguarxf"}        
      4  | {"swift","teslax","mirai"}              
      5  | {"volt","viper"}                        
      6  | {"viper","ferrariff","bmwi8"}           
      7  | {"ferrariff","viper","volt"}