Connecting Python to Remote SQL Server

Question

I am trying to connect Python to our remote SQL Server but I am not getting it. Following is a code that I used.

 server = 'server,1433' 
 database = 'db' 
 username = 'username' 
 password = 'pw' 
 cnxn = pyodbc.connect('DRIVER={ODBC Driver 17 for SQL Server};SERVER='+server+';DATABASE='+database+';UID='+username+';PWD='+ password)
 cursor = cnxn.cursor()
 cursor.execute('SELECT top 1 * FROM db.dbo.t_location')
 for row in cursor:
     print(row)

We have 2 servers. One is database server but I use application server for SQL which connects to database server. This is the error I'm getting. I am trying for a week but I'm not sure what am I missing here. Any help would be appreciated

OperationalError: ('08001', '[08001] [Microsoft][ODBC Driver 17 for SQL Server]TCP Provider: No such host is known.\r\n (11001) (SQLDriverConnect); [08001] [Microsoft][ODBC Driver 17 for SQL Server]Login timeout expired (0); [08001] [Microsoft][ODBC Driver 17 for SQL Server]A network-related or instance-specific error has occurred while establishing a connection to SQL Server. Server is not found or not accessible. Check if instance name is correct and if SQL Server is configured to allow remote connections. For more information see SQL Server Books Online. (11001)')

ADDED:

connection_str = ("Driver={SQL Server Native Client 11.0};"
                  "Server= 10.174.124.12,1433;"
                  #"Port= 1433;"
                  "Database=AAD;"
                  "UID=dom\user;"
                  "PWD=password;"
                  )

connection = pyodbc.connect(connection_str) data = pd.read_sql("select top 1 * from dbo.t_location with (nolock);",connection)

I used the above code and now I see this error. Seems like it worked but failed to login. Usually I have to use Windows authentication in SSMS once I put my credentials to login in remote desktop.

('28000', "[28000] [Microsoft][SQL Server Native Client 11.0][SQL Server]Login failed for user 'dom\user'. (18456) (SQLDriverConnect); [28000] [Microsoft][SQL Server Native Client 11.0][SQL Server]Login failed for user 'dom\user'. (18456)")

Answer:

I am excited that I finally found a solution using pymssql. I don't know pyodbc wasn't working but I am sure I must have had done something wrong. I used below code to get the data from remote SQL server using Python.

import pymssql

conn = pymssql.connect(
    host=r'10.174.124.12',
    user=r'dom\user',
    password=r'password',
    database='db'
)
cursor = conn.cursor(as_dict=True)
cursor.execute('Select top 4 location_id, description from t_location with (nolock)')
data = cursor.fetchall()
data_df = pd.DataFrame(data)

cursor.close()

Ignore my code at this moment. I still have to do some cleaning but this code will work.

Answer 1

you can use this function:

def connectSqlServer(Server , Database , Port , User , Password):
    try:
        conn = pyodbc.connect('Driver={SQL Server}; Server='+Server+'; 
Database='+Database+'; Port='+Port+'; UID='+User+'; PWD='+Password+';')
        cursor = conn.cursor()


except Exception as e:
    print("An error occurred when connecting to DB, error details: {}".format(e))
    return False, None
else:
    return True, cursor

Answer 2

Finally to answer my question, I had to use pymssql which worked. I did not have to put the port number which was making me confused. Thanks everyone for taking out time to answer.

import pymssql

conn = pymssql.connect(
    host=r'10.174.124.12',
    user=r'dom\user',
    password=r'password',
    database='db'
)
cursor = conn.cursor(as_dict=True)
cursor.execute('Select top 4 location_id, description from t_location with (nolock)')
data = cursor.fetchall()
data_df = pd.DataFrame(data)

cursor.close()