Oracle DELETE sql with JOIN doesn't work

Question

My delete statement returns a 933 error in Oracle, I'm not sure what is wrong-

DELETE b
from temp a
JOIN
  fact_tab b
on a.col1 = b.col1
and a.col2 = b.col2
and a.col3 = b.col3;

Both tables dont have a primary key. select statement on the same thing works-

select * 
from temp a
JOIN
  fact_tab b
on a.col1 = b.col1
and a.col2 = b.col2
and a.col3 = b.col3;

Where in the manual did you find the syntax to use a `JOIN` for a `DELETE` statement? https://docs.oracle.com/cd/E11882_01/server.112/e41084/statements_8005.htm#SQLRF01505 — , Feb 20 '15 at 07:05
My mistake, I am not deeply familiar with Oracle. How would I accomplish this? — user2441441, Feb 20 '15 at 07:07

score 3 · Answer 1 · answered Feb 20 '15 at 07:07

3

try this

DELETE FROM
  fact_tab
WHERE
  EXISTS
  (
    SELECT
      1
    FROM
      temp
    WHERE
      temp.col1 = fact_tab.col1 AND
      temp.col2 = fact_tab.col2 AND
      temp.col2 = fact_tab.col2
  )

answered Feb 20 '15 at 07:07

Okdel

183
1
5

score 1 · Accepted Answer · answered Feb 20 '15 at 07:08

Oracle doesn't allow JOIN in a DELETE statement directly like that.

You could do the delete in the following way:

DELETE
FROM fact_tab
WHERE ROWID IN
  (SELECT b.rowid
  FROM temp a
  JOIN fact_tab b
  ON a.col1  = b.col1
  AND A.col2 = b.col2
  AND A.col3 = b.col3
  );

You could also use WHERE EXISTS clause.

Oracle DELETE sql with JOIN doesn't work

2 Answers2

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