JOINing mdb tables with pyodbc

问题

I try to JOIN two MS access tables this way in python (pyodbc):

query = "SELECT Karta.id FROM Karta JOIN zaznam ON (Karta.id=zaznam.karta)"
cursor.execute(query) 

But I am getting an error:

pyodbc.ProgrammingError 42000  microsoft access driver syntax error in form clause -3506 SqlExecDirectW

What am I doing wrong?

回答1:

You need to specify the type of join (INNER, LEFT OUTER, RIGHT OUTER) in the FROM clause. The type of join used depends on what you want the results to contain, I'm guessing you want an INNER JOIN. A reference for the join types available in Access can be found here.

Sample code assuming INNER JOIN

query = "SELECT Karta.id FROM Karta INNER JOIN zaznam ON (Karta.id=zaznam.karta)"
cursor.execute(query) 

来源：https://stackoverflow.com/questions/9700556/joining-mdb-tables-with-pyodbc