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Old 12-29-2002, 10:47 AM
domacc domacc is offline
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Join Date: Dec 2002
Location: Napoli, ITALY
Posts: 1
Unhappy updating count fields

I have to build a database of firms that can have more than one address. It is formed by two Tables:

Table1 Firms

Fields

FirmID Firm name Number_of_sites

Table2 Addresses

SiteID FirmID SiteAddress

Do you know if I can update the Number_of_sites field by using an UPDATE query with a count on the fields of the second table joined to the ones of the first?
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  #2  
Old 12-30-2002, 10:10 AM
skhanal skhanal is offline
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Join Date: Nov 2002
Location: New Jersey, USA
Posts: 3,369
update Firm
set Number_of_sites = (select count(*)
from Addresses
where FirmID = Firm.FirmID)
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