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I am attempting to include variable in python script that invokes MS SQL Server

import pyodbc
ip_addr = '10.10.10.10'
querystring = """SELECT USER_NAME
FROM sem6.sem_computer, [sem6].[V_SEM_COMPUTER], sem6.IDENTITY_MAP, sem6.SEM_CLIENT
WHERE [sem6].[V_SEM_COMPUTER].COMPUTER_ID = SEM_COMPUTER.COMPUTER_ID
AND sem6.SEM_CLIENT.GROUP_ID = IDENTITY_MAP.ID
AND sem6.SEM_CLIENT.COMPUTER_ID = SEM_COMPUTER.COMPUTER_ID
AND [IP_ADDR1_TEXT] = %s
"""
params = (ip_addr)
con = pyodbc.connect('DRIVER={SQL Server};SERVER=10.10.10.100;DATABASE=database;UID=username;PWD=password')
cur = con.cursor()
cur.execute(querystring, params)
result = cur.fetchone()[0]
print result
con.commit()
con.close()

And it gives the following error

Traceback (most recent call last):
 File "database_test.py", line 17, in <module>
 cur.execute(querystring, params)
pyodbc.ProgrammingError: ('The SQL contains 0 parameter markers, but 1 parameter
s were supplied', 'HY000')
asked Jun 30, 2014 at 18:18
7
  • 1
    In your current code, params is not a tuple, it's a string equal to ip_addr. In order to make a one-item tuple, you need a trailing comma, as in params = (ip_addr,). Commented Jun 30, 2014 at 18:21
  • @murgatroid99 I tried this, and am receiving same error Commented Jun 30, 2014 at 18:24
  • I didn't expect that was the cause of your problem. It was just an error I noticed. That's why it was a comment. Commented Jun 30, 2014 at 18:27
  • 1
    What if you use a '?' instead of a '%s'? Commented Jun 30, 2014 at 18:31
  • @Matt using ? without quotes will work! Commented Jun 30, 2014 at 18:36

1 Answer 1

1

Use ? instead of %s in your original query.

answered Jun 30, 2014 at 18:38
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