| From: | "Zhe He" <henryhezhe2003(at)gmail(dot)com> |
|---|---|
| To: | pgsql-hackers(at)postgresql(dot)org |
| Subject: | How to get Agg attribute |
| Date: | 2008-09-16 16:03:52 |
| Message-ID: | d7ca04b40809160903n1a404de2tf704747eedad712c@mail.gmail.com |
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| Lists: | pgsql-hackers |
Hi,
I am implementing a new feature of postgres. The problem is
how to get the attribute of Aggregation. In
/src/backend/commands/explain.c,
I want to add a function after "case AGG_HASHED" to get the name
of this aggregation attribute in the table. How can I get it.
I tried to see (Agg *) plan)->grpColIdx, which just is a integer number.
Best Regards,
Zhe HE
TEL: (001) 646-789-3008
Address:965 Amsterdam Avenue,
New York, NY 10025
Master Student, CS Dept.
Columbia University
www.columbia.edu/~zh2132
-------------------------------------------
07 Alumni
Bachelor of Eng, BUPT
www.bupt.edu.cn
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