On 6/22/05, David Kagiri wrote:
> When i run the queries below they all work just fine
> 
> SELECT sum(consultation)+ sum(laboratory) FROM nairobi,familymembers WHERE 
> familymembers.dependantid = nairobi.memberid and familymembers.memberid = 
> "AKI00001"
> 
> SELECT sum(consultation)+ sum(laboratory) FROM riftvalley,familymembers WHERE 
> familymembers.dependantid = riftvalley.memberid and familymembers.memberid = 
> "AKI00001"
> 
> SELECT sum(consultation)+ sum(laboratory) FROM coast,familymembers WHERE 
> familymembers.dependantid = coast.memberid and familymembers.memberid = 
> "AKI00001"
> 
> But i would like to run the querys above as one query that will return a 
> value that will be equivalent to the sum of the values of those queries. i 
> hope its possible. is it? i am using MySQL version 4.1.7

SELECT sum(consultation)+ sum(laboratory)
FROM familymembers fm
 INNER JOIN coast ON fm.dependantid = coast.memberid
 INNER JOIN riftvalley ON fm.dependantid = riftvalley.memberid
 INNER JOIN nairobi ON fm.dependantid = nairobi.memberid
WHERE fm.memberid = "AKI00001"

Jochem

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