| From: | Bruce Momjian <maillist(at)candle(dot)pha(dot)pa(dot)us> |
|---|---|
| To: | vadim(at)sable(dot)krasnoyarsk(dot)su (Vadim B(dot) Mikheev) |
| Cc: | lockhart(at)alumni(dot)caltech(dot)edu, hackers(at)postgreSQL(dot)org |
| Subject: | Re: [HACKERS] Re: subselects |
| Date: | 1998-01-15 23:26:41 |
| Message-ID: | 199801152326.SAA26747@candle.pha.pa.us |
| Views: | Whole Thread | Raw Message | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
> typedef struct SubLink {
> NodeTag type;
> int linkType; /* EXISTS, ALL, ANY, EXPR */
> bool useor; /* TRUE for <> */
> List *lefthand; /* List of Var/Const nodes on the left */
> List *oper; /* List of Oper nodes */
> Query *subquery; /* */
> } SubLink;
OK, we add this structure above. During parsing, *subquery actually
will hold Node *parsetree, not Query *.
And add to Query:
bool hasSubLinks;
Also need a function to return a List* of SubLink*. I just did a
similar thing with Aggreg*. And Var gets:
int uplevels;
Is that it?
--
Bruce Momjian
maillist(at)candle(dot)pha(dot)pa(dot)us
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