从另一个表中的键更新外键

Question

I need a query that will take the primary key from one table (table 2) and place it in a second table (table 1) as a foreign key. The database is Microsoft Access 2007. I tried the following query but it did not work:

update table1 
set table1.table2ID = table2.ID
FROM table1  INNER JOIN  table2 on table1.name = table2.name

The two tables are as follows:

Table 1:

ID  | table2ID  | Name
--------------------------
1   |           |   Name1   
2   |           |   Name2   
3   |           |   Name1    

Table 2:

ID    | Name
-----------------
1     |    Name1   
2     |    Name2    

I want the result to be:

Table 1:

ID  | table2ID  | Name
--------------------------
1   |       1   |   Name1   
2   |       2   |   Name2   
3   |       1   |   Name1    

Answer 1

Try this:

update table1 
INNER JOIN table2 ON table1.name = table2.name
SET table1.table2ID = table2.ID

or this:

update table1, table2
SET table1.table2ID = table2.ID
WHERE table1.name = table2.name

Let me know which one works for you best.

Answer 2

U can try this :

update TABLE1 set tabel2id = TABLE2.Id from TABLE1 s inner join TABLE2 s on u.name = s.NAME

It worked for me..