SQL Matlab (ambiguous) -

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first, want i'm complete newbie in sql, please bear me, myself , stupidity.

i've been trying data through matlab using

​sqlquery='select patientid, visit_results.visitid, segmentid, init_time, end_time, num_steps, "distance_f", height, weight, birth visit, visit_results, patient visit_results.visitid=visit.visitid , visit_results.visitid=patient.patientid';

now, know sure 3 tables exist. both visit_results , visit have visitid primary key.

i want data third table, patient, primary key patientid.

am missing something?

you joining visitid patientid, not right join (deduction based on column names).. try instead:

sqlquery=' select patient.patientid,        visit_results.visitid,        segmentid,        init_time,        end_time,        num_steps,        "distance_f",        height,        weight,        birth   visit, visit_results, patient  visit_results.visitid = visit.visitid , visit.patientid = patient.patientid'

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