In reality all it takes is a sequence, however if it were system generated it would be simpler

Dave
On 30-Jun-05, at 6:46 PM, Alvaro Herrera wrote:

On Thu, Jun 30, 2005 at 06:39:43PM -0400, Dave Cramer wrote:

Do the transaction id's used in 2PC need to be unique across all
sessions?


Yes.


Do we provide a mechanism for this ?


Huh, the constraint is enforced by the server, but the ID is generated
by the client.


If not shouldn't we provide a way to create a unique transaction id ?


Maybe a new function would suffice.

--
Alvaro Herrera (<alvherre[a]surnet.cl>)
"Use it up, wear it out, make it do, or do without"




---------------------------(end of broadcast)---------------------------
TIP 9: In versions below 8.0, the planner will ignore your desire to
      choose an index scan if your joining column's datatypes do not
      match

Reply via email to