SQL - 如果相同的记录不在表Y中，则从表X中删除记录

Question

sorry to make a big fuss about delete same records again, but i can't find any solution :(

i need something like that:

if a select of 3 columns values from table1
is NOT equal to the same select in table2
than delete record from table2

that are my aproaches:

DELETE FROM table2
INNER JOIN table1
ON table2.basketid = table1.basketid AND
table2.artid = table1.artid
WHERE table1.userid='007'

DELETE FROM table2
WHERE NOT EXISTS (
SELECT basketid, artid
FROM table1
)
AND userid ='007'

Thanks for your help or any tipp!!

Answer 1

you can do this in SQL Server

DELETE  t2
FROM    Table2 t2
WHERE   NOT EXISTS ( SELECT 1
                     FROM   Table1 t1
                     WHERE  t1.basketid = t2.basketid
                            AND t1.artid = t2.artid )
        AND t2.userid = '007'

notice the filters in the select that compares the values in Table2 to Table1

if userid is also in Table2 you might want to add that to the WHERE also

DELETE  t2
FROM    Table2 t2
WHERE   NOT EXISTS ( SELECT 1
                     FROM   Table1 t1
                     WHERE  t1.userid = t2.userid
                            AND t1.basketid = t2.basketid
                            AND t1.artid = t2.artid )
        AND t2.userid = '007'

Answer 2

Could be you need a where ( ) not in ( )

DELETE FROM table2
WHERE (basketid, artid ) NOT IN (
       SELECT basketid, artid
       FROM table1
      )
AND userid ='007';

Answer 3

DELETE y
FROM  X
LEFT JOIN Y
ON 
    X.COL1=Y.COL1
AND
    X.COL2=Y.COL2
AND
    X.COL3=Y.COL3
WHERE 
    Y.COL1 IS NULL

Try the above code.