Regarding JOIN query in Mysql
Here is my database structure:
payment option:
mshiptype_id
paymopt_Id
membertopaymentoption:
member_Id
paymopt_Id
mshiptypes
mshiptype_name
mshiptype_id
timetable_id
timetables
timetable_id
timetable_Name
timeslots
timeslot_id
timeslot_name
timeslo开发者_如何学JAVAttotimetables
timeslot_id
timetable_id
I want to get the mshiptype_name and timeslot_name and timetable_name for single member
by using above tables
would any one give suggestions on join query......in mysql
SELECT mshiptype_name, timeslot_name, timetable_name
FROM mshiptypes ST
INNER JOIN paymentoption PO ON ST.mshiptype_id = PO.mshiptype_id
INNER JOIN membertopaymentoption MPO ON PO.paymopt_Id = MPO.paymopt_Id
INNER JOIN timetables TT ON ST.timetable_id = TT.timetable_id
INNER JOIN timeslottotimetables TTT ON TT.timetable_id = TTT.timetable_id
INNER JOIN timeslotss TS ON TTT.timeslot_id = TS.timeslot_id
WHERE MPO.member_id = <members_id>
I think this is what you want:
SELECT mshiptypes.mshiptype_name, timeslots.timeslot_name, timetables.timetable_Name
FROM membertopaymentoption
INNER JOIN paymentoption ON membertopaymentoption.member_Id=paymentoption.paymopt_Id
INNER JOIN mshiptypes ON paymentoption.mshiptype_id=mshiptypes.mshiptype_id
INNER JOIN timetables ON mshiptypes=timetable_id=timetables.timetable_id
INNER JOIN timesslottotimetables ON timetables.timetable_id=timeslottotimetables.timeslot_id
INNER JOIN timeslots ON timeslottotimetables.timeslot_id=timeslots.timeslot_id
WHERE membertopaymentoption.member_Id=$id
Note: replace $id
in the WHERE clause with the actual memeber id
The trick is to identify fields common to two different tables, and try to find a path linking all the fields you want.
select
mtpo.member_Id,
mt.mshiptype_name,
ts.timeslot_name,
tt.timetable_name
from
payment_option po
left join membertopaymentoption mtpo on po.paymopt_Id = mtpo.paymopt_Id
left join mshiptypes mt on mt.mshiptype_id = po.mshiptype_id
left join timetables tt on tt.timetable_id= mt.timetable_id
left join timeslottotimetables tstt on tstt.timetable_id = tt.timetable_id
left join timeslots ts on ts.timeslot_id = tstt.timeslot_id
where
member_Id = 1 -- change this
Also, I suggest tidying up the names of your fields and tables before it gets too late. They are quite messy!
select mt. mshiptype_name, ts. timeslot_name, tt. timetable_Name
from membertopaymentoption mtp
inner join payment p on mtp. paymopt_Id = p.paymopt_Id
inner join mshiptypes mt on p.mshiptype_id = m.mshiptype_id
inner join timetables tt on mt.timetable_id = tt. timetable_id
inner join timeslottotimetables tstt on tt timetable_id = tstt. timetable_id
inner join timeslots ts on tstt. timeslot_id = ts. timetable_id
where mtp. member_Id = @memID //will be provided
select
mshiptype_name,
timeslot_name,
timetable_name
from
paymentoption
natural join membertopaymentoption
natural join mshiptypes
natural join timetables
natural join timeslottotimetables
natural join timeslots
where
member_Id = 1
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