Ashutosh Bapat writes:
> OJ is an outer join, AFAIU. OJ's have their own relids. If you are
> wondering why not all joins - I think inner joins need not be tracked as
> separated relations in parse tree, but OJ's need to be.
An outer join is necessarily associated with explicit JOIN syntax
in the
On Fri, May 24, 2024 at 9:09 AM jian he wrote:
> On Fri, May 24, 2024 at 11:14 AM Tom Lane wrote:
> >
> > jian he writes:
> > > imho, the above comment is not very helpful.
> > > we should say more about what kind of information relid says about a
> base rel?
> >
> > "Relid" is defined at the v
On Fri, May 24, 2024 at 11:14 AM Tom Lane wrote:
>
> jian he writes:
> > imho, the above comment is not very helpful.
> > we should say more about what kind of information relid says about a base
> > rel?
>
> "Relid" is defined at the very top of the file:
>
> /*
> * Relids
> * Se
jian he writes:
> imho, the above comment is not very helpful.
> we should say more about what kind of information relid says about a base rel?
"Relid" is defined at the very top of the file:
/*
* Relids
* Set of relation identifiers (indexes into the rangetable).
*/
typedef Bitm
jian he 于2024年5月24日周五 10:58写道：
> hi
>
> typedef struct RelOptInfo
> {
>
> /*
> * information about a base rel (not set for join rels!)
> */
> Index relid;
> ...
> }
>
> imho, the above comment is not very helpful.
> we should say more about what kind of information relid says about a base
>
hi
typedef struct RelOptInfo
{
/*
* information about a base rel (not set for join rels!)
*/
Index relid;
...
}
imho, the above comment is not very helpful.
we should say more about what kind of information relid says about a base rel?
I don't know much about RelOptInfo, that's why I ask.
