Question

Hi i have the following 3 tables, example data inside them

patients : 1,DUMMY PT, 78936, 1987-07-18

Custom_fields : 1 , 1 , ‘blood pressure’ , input , ‘medical records’

patient_info : 1, 1 , 80/90 blah blah , 1

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what i want is when i very patient page, is to get ALL rows of ‘patient_info’ where pt_id=patients.patient_id and then get custom_fields.title=cf_id where doctor_id=$id
and show all.

from above given example of data it should looks like this:

Patient: DuMMY pt profile page :-

blood pressure : 80/90 blah blah

any hints how i should join this tables together ?

Note: i tried :

SELECT patient_info.info,custom_fields.title FROM patient_info where patient_info.pt_id='8' and custom_fields.id=patient_info.cf_id and custom_fields.doctor_id = '10'
join patients on patient_info.pt_id=patients.patients_id
join custom_fields on patient_info.cf_id=custom_fields.id

where 10 and 8 are already givens ($vars in php) but im getting error near ‘join patients on’

Answer 1

Try this:

SELECT p.info,cf.title 
FROM patient_info p
INNER JOIN patients ps ON p.pt_id=ps.patients_id
INNER JOIN custom_fields cf ON p.cf_id=cf.id
WHERE p.pt_id='8' AND cf.doctor_id = '10'