On Tue, Sep 13, 2016 at 10:28 PM, Robert Haas <robertmhaas@gmail.com> wrote:
> On Tue, Sep 6, 2016 at 9:07 AM, Ashutosh Bapat
> <ashutosh.bapat@enterprisedb.com> wrote:
>> That's not true with the alias information. As long as we detect which
>> relations need subqueries, their RTIs are enough to create unique aliases
>> e.g. if a relation involves RTIs 1, 2, 3 corresponding subquery can have
>> alias r123 without conflicting with any other alias.
>
> What if RTI 123 is also used in the query?
Good catch. I actually meant some combination of 1, 2 and 3, which is
unique for a join between r1, r2 and r3. How about r1_2_3 or
r1_r2_r3?
--
Best Wishes,
Ashutosh Bapat
EnterpriseDB Corporation
The Postgres Database Company