I am trying to setup schema for buildings and all their info.
because the number of areas for a building can vary , I have stored the areas in a table "areas", where each area has a foreign key pointing to the primary key of the building they belong to.
What I want is to try and get all the info for a building on one line like:
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id | address | owner | area 1 | area 2 | area 3 |
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1 | 21 kingsbridge st | claudia | kitchen | bathroom | garage|
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Using a LEFT JOIN
I can get the info, just not in the format Im after
I have set up a schema here http://www.sqlfiddle.com/#!9/83558/6
was hoping there is a query like maybe an aggregator function like GROUP BY or something? is this possible?
select x.pId, x.address, x.owner,
max(x.area1) A1, max(x.area2) A2,max(x.area3) A3,max(x.area4) A4,max(x.area5) A5
from
(
SELECT p.id pId, p.address, p.owner, a.id aId, a.property_id, a.area_name,
case when a.area_name = 'kitchen' then a.area_name else null end as area1,
case when a.area_name = 'garage' then a.area_name else null end as area2,
case when a.area_name = 'checkout' then a.area_name else null end as area3,
case when a.area_name = 'booths' then a.area_name else null end as area4,
case when a.area_name = 'bathroom' then a.area_name else null end as area5
FROM properties p
LEFT JOIN areas a
ON p.id = a.property_id
) as X
GROUP BY pId, x.address, x.owner
But you need to know what are the distinct areas.
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