Proper mysql code to alter table to horizontal - php

Question

I am trying to make the table below look like so
Current Query:
SELECT m.typeID, t.typeName, m.quantity, t.description
FROM invTypeMaterials AS m
LEFT JOIN invTypes AS t
ON m.materialTypeID = t.typeID
LEFT JOIN invTypes
ON m.TypeID = t.typeID
WHERE m.typeID = 10039
Current Result
typeID typeName quantity description
10039 Tritanium 71 The main building block in space structures. A ver...
10039 Pyerite 24 A soft crystal-like mineral with a very distinguis...
10039 Mexallon 1 Very flexible metallic mineral, dull to bright sil...
What I'm look for is for it to show up like this
typeID Tritanium Pyerite mexallon description
10039 71 24 1 Doesn't matter
I have tried combinations of left join, outer join, inner join etc and cant make it work. I also tried group_concat which I think is what I need but cant get the columns right
Thanks
EDIT: I have the column looking like I want by using the following:
SELECT m1.typeID,
SUM(CASE WHEN m1.materialTypeID = 34 THEN m1.quantity ELSE 0 END) AS Tritanium,
SUM(CASE WHEN m1.materialTypeID = 35 THEN m1.quantity ELSE 0 END) AS Pyerite,
SUM(CASE WHEN m1.materialTypeID = 36 THEN m1.quantity ELSE 0 END) AS Mexallon,
SUM(CASE WHEN m1.materialTypeID = 37 THEN m1.quantity ELSE 0 END) AS Isogen,
SUM(CASE WHEN m1.materialTypeID = 38 THEN m1.quantity ELSE 0 END) AS Nocxium,
SUM(CASE WHEN m1.materialTypeID = 39 THEN m1.quantity ELSE 0 END) AS Zydrine,
SUM(CASE WHEN m1.materialTypeID = 40 THEN m1.quantity ELSE 0 END) AS Megacyte,
SUM(CASE WHEN m1.materialTypeID = 11399 THEN m1.quantity ELSE 0 END) AS Morphite
FROM invTypeMaterials AS m1
WHERE m1.typeID = 10039
RESULT:
typeID Tritanium Pyerite Mexallon Isogen Nocxium Zydrine Megacyte Morphite
10039 71 24 1 0 0 0 0 0
When i take out the "WHERE" clause and try to pull them all it shows up like this:
typeID Tritanium Pyerite Mexallon Isogen Nocxium Zydrine Megacyte Morphite
18 13989190531 1301687143 261706229 54807927 14277967 4262960 1540121 40701
Any ideas?
UPDATE 2: I got it, the GROUP BY did the trick

Answer 1

Assuming the typeName values are always the same you can use subqueries in the select section of your query to get the values you want.
$sql = "SELECT m.typeID,
(SELECT m.quantity FROM invTypes AS t WHERE m.materialTypeID = t.typeID AND t.typeName = 'Tritanium') as Tritanium,
(SELECT m.quantity FROM invTypes AS t WHERE m.materialTypeID = t.typeID AND t.typeName = 'Pyerite') as Pyerite,
(SELECT m.quantity FROM invTypes AS t WHERE m.materialTypeID = t.typeID AND t.typeName = 'Mexallon') as Mexallon
FROM invTypeMaterials AS m
WHERE m.typeID = 10039";

Answer 2

I don't think there's any way in SQL to generate dynamic columns. If you can write dynamic SQL, then yes but in pure SQL, I don't think so.
If you're willing to hard-code the columns then you can do
SELECT
m.TypeID,
MAX(CASE
WHEN t.typeName = 'Tritanium' THEN m.quantity
ELSE 0
END) Tritanium,
MAX(CASE
WHEN t.typeName = 'Pyerite' THEN m.quantity
ELSE 0
END) Pyerite,
MAX(CASE
WHEN t.typeName = 'Mexallon' THEN m.quantity
ELSE 0
END) Mexallon
FROM
[your FROM clause]
WHERE
[your WHERE clause]
GROUP BY
m.TypeID;

Answer 3

We have pivot clause in oracle to do similar kind of functionality.
It helps in writing cross tabulation query i.e., we can aggregate results and rotate rows into columns.
tried the below with some sample data:
create table types(typeid number,typename varchar2(20),
quantity number);
insert into types values(1,'xx',11);
insert into types values(1,'yy',121);
insert into types values(1,'zz',113);
delete from types where typeid in(2,3);
select *from
(select typeid,typename,quantity from types)
pivot
(
sum(quantity)
for typename in('xx','yy','zz')
)
typeid xx yy zz
1 11 121 113