Il Lun 20 Lug 2020, 03:00 Haisheng Yuan ha scritto:
> Hi all,
>
> This is a rough idea, I'd like to see how the community think about it.
>
> RexListCmp extends RexNode / RexCall {
> public final SqlOperator op;
> public final RexNode left;
> public final ImmutableList list;
> public
I agree that NOT IN is toxic, and it is error-prone.
But you can't prevent people writing SQL with not in sub-queries, would you
rather let optimizer generate inefficient plan?
- Haisheng
--
发件人：Julian Hyde
日 期：2020年07月20日 11:56:35
Yuck!
NOT IN is toxic. I'd rather keep it out of the algebra.
On Sun, Jul 19, 2020 at 8:24 PM Haisheng Yuan wrote:
>
> Hi all,
>
> Currently, JoinRelType.ANTI only represents NOT_EXISTS subquery (thanks to
> Ruben for reminding).
> For some simple boolean context NOT_IN subquery, we can't
Hi, all.
Now I am preparing RC0.
Best,
Chunwei
On Sat, Jul 18, 2020 at 2:44 AM Julian Hyde wrote:
> It’s a difficult call. There’s kind of a time - functionality trade-off.
> At some point it’s diminishing returns - waiting another day won’t
> significantly improve the goodness of the
Hi all,
Currently, JoinRelType.ANTI only represents NOT_EXISTS subquery (thanks to
Ruben for reminding).
For some simple boolean context NOT_IN subquery, we can't transform it to ANTI
join. e.g.:
SELECT * FROM foo WHERE a NOT IN (SELECT b FROM bar); -- bar.b is nullable
Because if there is a
Liya Fan created CALCITE-4132:
-
Summary: Estimate the NDV accurately
Key: CALCITE-4132
URL: https://issues.apache.org/jira/browse/CALCITE-4132
Project: Calcite
Issue Type: Improvement
Hi all,
This is a rough idea, I'd like to see how the community think about it.
RexListCmp extends RexNode / RexCall {
public final SqlOperator op;
public final RexNode left;
public final ImmutableList list;
public final RexQuantifier quantifier;
public final RelDataType type;
}
Enum
