通过INNER JOIN更新从另一个表中获取值的Access表

Question

我试图使用pyodbc更新列中同一数据库中另一个表中列的数据。我试过了：

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() 

并且得到一个“missing operator”语法错误。

我也试过：

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() 

也出现了错误。这里的正确逻辑是什么？

Answer 1

对于你想使用以下形式的查询Access数据库：

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