Update Access table with value from another table via INNER JOIN

Question

I'm trying to update a column using pyodbc with data from a column in another table in the same database. I've tried:

cursor.execute('''
            UPDATE Prospect_SC_Fin_102016
            SET Prospect_SC_Fin_102016.Sym_Ky=Symbol_Ref_102016.Sym_Ky
            FROM Prospect_SC_Fin_102016
            INNER JOIN Symbol_Ref_102016
            ON Prospect_SC_Fin_102016.Symbol=Symbol_Ref_102016.Symbol;
            ''')
con.commit()
cursor.close()
con.close()

and get a "missing operator" syntax error.

I've also tried:

cursor.execute('''
            UPDATE Prospect_SC_Fin_102016
            SET Prospect_SC_Fin_102016.Sym_Ky=(SELECT Sym_Ky
            FROM Symbol_Ref_102016 WHERE Symbol IN
            (SELECT Symbol FROM Prospect_SC_Fin_102016));
            ''')
con.commit()
cursor.close()
con.close()

which also errors out. What's the correct logic here?

Answer 1

For an Access database you would want to use a query of the following form:

UPDATE Prospect_SC_Fin_102016
INNER JOIN Symbol_Ref_102016
    ON Prospect_SC_Fin_102016.Symbol=Symbol_Ref_102016.Symbol
SET Prospect_SC_Fin_102016.Sym_Ky=Symbol_Ref_102016.Sym_Ky