On 4/12/07, NikhilS <[EMAIL PROTECTED]> wrote:

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
select a, (select y from supdate_test where x = a) from update_test;


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