Hi, On 4/12/07, Merlin Moncure <[EMAIL PROTECTED]> wrote:
On 4/12/07, NikhilS <[EMAIL PROTECTED]> wrote: > Hi, > > Shouldn't the final command below cause a 'column "b" does not exist error'? > > create table update_test (a int, b int); > create table supdate_test(x int, y int); > insert into update_test values (20, 30); > insert into supdate_test values (40, 50); > select a, (select b from supdate_test) from update_test; > > a ?column? > ---------- ------------------------- > 20 30 > > Is the problem with the code in colNameToVar or maybe we should add checks > in transformSubLink? I don't think so...the columns of update_test are visible to the scalar subquery...that way you can use fields from 'a' to filter the subquery... select a, (select y from supdate_test where x = a) from update_test;
Yes this is fine, but in "select columnname from tablename" using column references of the other involved table is what I am objecting to. Regards, Nikhils -- EnterpriseDB http://www.enterprisedb.com
