Alvaro Herrera wrote:
> Russell Francis wrote:
>=20
>> If a SELECT statement contains a table in it's FROM clause which has 0
>> records in it, the query will not return any results. If a record is ad=
ded
>> to the table even though it shouldn't modify the results of query, the q=
uery
>> will return the expected result.
>>
>> The SQL statements below are a trimmed down test case which duplicates t=
his
>> issue. The identical SELECT statements return different results dependi=
ng
>> on the record count of the unrelated table_b.
>>
>> SELECT table_a.* FROM table_a, table_b WHERE table_a.ta_col_a > 0;
>=20
> table_b is certainly not unrelated, as it appears in the FROM clause.
> So the query is correct to not show any result, per definition of
> cartesian product.
>=20
Alvaro,
Yes, you are correct. Sorry.
Thanks,
Russ
