SQL Query help (possibly use JOIN?) - mysql

Question

Table A [PATIENT] has columns [PATID], [FIRSTVISITDATE]
Table B [APPT] has columns [APPTID], [PATID], [CREATEDATE]
Table C [NOTE] has columns [NOTEID], [NOTETEXT]
Table D [PROCS] has column [PROCID], [PATID]
Table E [CHARGE] has columns [CHARGEID], [AMOUNT]
I need to sum CHARGE(AMOUNT) by PATID for all PATIENTS where the NOTE.NOTETEXT contains 'text' and one of the APPT for a PATIENT containing the 'text' has an APPT.CREATEDATE = to the PATIENT.FIRSTVISITDATE
Simply put I need to SUM the charges for PATIENTS if they have an appointment with 'text' in their notes and the appointment with that 'text' was their first visit to the office
Other key points:
CHARGE.CHARGEID = PROC.PROCID
NOTE.NOTEID = APPT.APPTID
With my limited knowledge of SQL I was able to sum for all patients regardless if the 'text' was included in their first appointments notes and for that I used:
select (SUM(AMOUNT)) as 'Cash Payments' from CHARGE where CHARGEID in
(select PROCID from PROC where PATID in
(select PATID from APPT where APPTID in
(select NOTEID from NOTE where NOTETEXT like '%text%')))

Answer 1

You can use the GROUP BY clause to group the AMOUNT by patient. You can filter your patients to just the ones with the text in the notes and FIRSTVISITDATE = CREATEDATE using an inner query that joins the tables on those conditions.
I have not tested the following query, but it should do what you're asking.
SELECT pa.PATIENT, SUM(c.AMOUNT) AS 'Cash Payments'
FROM PATIENT pa
INNER JOIN PROCS pr
ON pa.PATID = pr.PATID
INNER JOIN CHARGE c
ON pr.PROCID = c.CHARGEID
WHERE pa.PATIENT IN (
SELECT pa.PATIENT
FROM PATIENT pa
INNER JOIN APPT a
ON pa.PATID = a.PATID
AND pa.FIRSTVISITDATE = a.CREATEDATE
INNER JOIN NOTE n
ON a.APPTID = n.NOTEID
WHERE n.NOTETEXT LIKE '%text%'
)
GROUP BY pa.PATIENT;