DELETE FROM (Select…) SAP HANA

Question

This may be specific to SAP HANA, but how come this does not work and is there a recommended workaround:

DELETE FROM
(SELECT
 PKID
, a
, b)
Where a > 1 

There is a Syntax Error at "("

In fact, DELETE FROM (TABLE) where a > 1 does not work either and gives the same syntax error.

The problem is that I need to delete specific rows that are flagged used a Rank function in my select statement.

Thanks (first post, been lurking and searching forever).

-CW

Answer 1

Thanks for the responses. I have now put a table immediately after the DELETE FROM and put Where restrictions on the DELETE and in a small series of self-joins of the table.

DELETE from TABLE1
WHERE x IN
   (SELECT A.x FROM

   (SELECT x, r1.y, r2.y, DENSE_RANK() OVER (PARTITION by r1.y, r2.y ORDER by x) as RANK
       FROM TABLE2 r0
       INNER JOIN TABLE1 r1 on r0.x = r1.x
       INNER JOIN TABLE1 r2 on r0.x = r2.x
       WHERE r1.y = foo and r2.y = bar
    ) as A  WHERE A.RANK > 1
   )