RE: [GENERAL] FW: Optimisation of IN condition

2001-03-08 Thread Mayers, Philip J
ECTED]' Subject: RE: [GENERAL] FW: Optimisation of IN condition Ok, after some suggestions from a colleague, I've refactored the query to use an outer join, like this: hdb=> select host.ip as registeredip,arptable.ip as realip,host.mac,arptable.router,arptable.interface from host,arpta

RE: [GENERAL] FW: Optimisation of IN condition

2001-03-08 Thread Mayers, Philip J
ntre for Computing Services| | Imperial College | +--+ -Original Message- From: Mayers, Philip J [mailto:[EMAIL PROTECTED]] Sent: 08 March 2001 11:22 To: '[EMAIL PROTECTED]' Subject: [GENERAL] FW: Optimisation of IN condition I'v

[GENERAL] FW: Optimisation of IN condition

2001-03-08 Thread Mayers, Philip J
I've got some tables: create table interface ( machineid text, mac macaddr, primary key(mac) ); create table arptable ( router text, interface int2, mac macaddr, ip inet ); They're big, 10k rows in interface, maybe 35k in arptable. I want to do this: hdb=> explain select * from