| From: | Gurjeet Singh <singh(dot)gurjeet(at)gmail(dot)com> |
|---|---|
| To: | Kevin Grittner <Kevin(dot)Grittner(at)wicourts(dot)gov> |
| Cc: | kakarukeys <kakarukeys(at)gmail(dot)com>, pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: adding foreign key constraint locks up table |
| Date: | 2010-12-28 14:56:19 |
| Message-ID: | AANLkTi=2oiDu-C_61c8OFkDQe42NA+C+2AZ=mVkAFu2L@mail.gmail.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-performance |
On Tue, Dec 28, 2010 at 9:43 AM, Kevin Grittner <Kevin(dot)Grittner(at)wicourts(dot)gov
> wrote:
> Gurjeet Singh <singh(dot)gurjeet(at)gmail(dot)com> wrote:
>
> > how many rows does "bbb" have? And what are the data types of
> > column aaa.idand bbb.topic_id?
>
> For that matter, is there a unique index (directly or as the result
> of a constraint) on the aaa.id column (by itself)?
>
>
Isn't it a requirement that the FKey referenced columns be UNIQUE or PRIMARY
KEY'd already?
Regards,
--
gurjeet.singh
@ EnterpriseDB - The Enterprise Postgres Company
http://www.EnterpriseDB.com
singh(dot)gurjeet(at){ gmail | yahoo }.com
Twitter/Skype: singh_gurjeet
Mail sent from my BlackLaptop device
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Florian Weimer | 2010-12-28 14:57:14 | Re: adding foreign key constraint locks up table |
| Previous Message | Kevin Grittner | 2010-12-28 14:43:49 | Re: adding foreign key constraint locks up table |