[EMAIL PROTECTED] wrote:
> Hi,
>
> I'm trying to use pymssql to execute a stored procedure. Currently, I
> have an Excel spreadsheet that uses VBA in this manner:
>
> Private Function CreateNewParrot(connDb As ADODB.Connection) As Long
> Dim objCommand As ADODB.Command
> Dim iParrot As Long
> Dim bSuccess As Boolean
>
> Set objCommand = CreateObject("ADODB.Command")
> objCommand.ActiveConnection = connDb
> objCommand.CommandText = "create_new"
> objCommand.CommandType = adCmdStoredProc
> objCommand.Parameters.Refresh
> On Error Resume Next
> Err.Clear
> objCommand.Execute
> bSuccess = (Err.Number = 0)
> On Error GoTo 0
> If (bSuccess) Then
> If (IsNull(objCommand("@parrot"))) Then
> iParrot = 0
> Else
> iParrot = CLng(objCommand("@parrot"))
> End If
> Else
> iParrot = 0
> End If
> Set objCommand = Nothing
> CreateNewParrot = iParrot
> End Function
Depending on what you're after, why not transliterate
it into Python?
import win32com.client
command = win32com.client.Dispatch ("ADODB.Command")
etc.
> My attempts to translate this into a python script using pymssql have
> so far been fruitless. Here is what I have tried:
>>>> import pymssql
>>>> con = pymssql.connect(host='blah', user='blah', password='blah',
>>>> database='blah')
>>>> cur = con.cursor()
>>>> command = 'exec create_new_parrot'
>>>> cur.execute(command, '@parrot')
> Traceback (most recent call last):
> File "<stdin>", line 1, in ?
> File "C:\Program Files\Python\lib\site-packages\pymssql.py", line
> 127, in execute
> self.executemany(operation, (params,))
> File "C:\Program Files\Python\lib\site-packages\pymssql.py", line
> 153, in executemany
> raise DatabaseError, "internal error: %s" % self.__source.errmsg()
> pymssql.DatabaseError: internal error: SQL Server message 8114,
> severity 16, state 5, procedure create_new_parrot, line 0:
> Error converting data type nvarchar to int.
> DB-Lib error message 10007, severity 5:
> General SQL Server error: Check messages from the SQL Server.
Well, I'm not connected to a SQL Server here (so this
is untested) but I don't believe pymssql handles
stored procedure calls differently from any other
SQL. Which is a problem here because, as far as I
can make out from your code above, @parrot is an
output parameter for the create_new stored proc.
Is that right? If it's an input-only param, then
just do the usual:
import pymssql
db = pymssql.connect (...)
q = db.cursor ()
q.execute (
"EXECUTE create_new @parrot = %s",
["parrot-thing"]
)
I'm not aware of any of the MSSQL dbapi
modules which allow for output parameters
in stored procedures. pyodbc (one of the most
recent entrants) tantalisingly offers a .callproc
but then comments "not yet supported". If the ADO
approach works, I'd use that if I were you!
TJG
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