On Wed, 2003-09-24 at 12:30, Jonatan Pugliese. wrote: > select MaeSocio.* from MaeSocio > LEFT JOIN MaeSeguro ON MaeSocio.NroSocio=MaeSeguro.NroSocio > where MaeSeguro.NroSocio is null > > MaeSeguro.NroSocio is not null > > count(*) MaeSocio = 354000 > count(*) MaeSeguro=108000 > > how i can retype this query?
<Stab in the dark> SELECT * FROM MaeSocio WHERE ((MaeSocio.NroSocio = MaeSeguro.NroSocio) AND (NroSocio = NULL)); SELECT * FROM MaeSeguro WHERE MaeSeguro.NroSocio = MaeSocio.NroSocio; Process the data from there. Oh, and index MaeSeguro.NroSocio. That will make finding NULL values easier. I think. :-D </Stab in the dark> Let me know if I was right or just...erm...stabbing in the dark. -Dan -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
