Re: row level lock and table level locks

>TupleTables are just temporary data structures to hold transiently
>created tuples during execution of a query.  There's usually one for
>each plan node.
>
whats a 'plan node'?

>From: Tom Lane <tgl@sss.pgh.pa.us>
>To: "Jenny -" <nat_lazy@hotmail.com>
>CC: pgsql-hackers@postgresql.org
>Subject: Re: [HACKERS] row level lock and table level locks Date: Mon, 08 
>Sep 2003 12:49:51 -0400
>
>"Jenny -" <nat_lazy@hotmail.com> writes:
> > I found out that TupleTable stores per-tuple information(it stores
> > HeapTupleData) and that also there are multiple TupleTables in the db at 
>a
> > time.Based on what are diffrent TupleTables created?
>
>TupleTables are just temporary data structures to hold transiently
>created tuples during execution of a query.  There's usually one for
>each plan node.
>
>            regards, tom lane
>
>---------------------------(end of broadcast)---------------------------
>TIP 4: Don't 'kill -9' the postmaster

_________________________________________________________________
Compare Cable, DSL or Satellite plans: As low as $29.95.  
https://broadband.msn.com