I have two tables in the following structure
table_1
uid | name | age
1 | John | 24
2 | Adam | 35
3 | Sara | 26
table_2
id | uid | meta_key | meta_value
1 | 2 | location | NY
2 | 2 | school | NYU
3 | 3 | Location | NY
4 | 3 | school | XYZ
6 | 1 | location | NY
6 | 1 | school | NYU
What I am trying to do is to select the users from table_1 where their location is NY and school is NYU
here is the query I tried using with no luck
SELECT
tabl_1.uid
FROM `tabl_1`, `tabl_2`
WHERE
tabl_1.uid = tabl_2.uid
AND table_2.meta_key IN ('location', 'school')
AND table_2.meta_value IN ('NY', 'NYU')
ORDER BY tabl_1.uid ASC
I have looked everywhere without any luck, if you have a query that works or a link to a solution that would much appreciated, thank you.
You should try
SELECT t1.uid
FROM tabl_1 t1 INNER JOIN tabl_2 t2
ON t1.uid = t2.uid AND t2.meta_key = 'location' AND t2.meta_value = 'NY'
INNER JOIN tabl_2 t3
ON t1.uid = t3.uid AND t3.meta_key = 'school' AND t3.meta_value = 'NYU'
Check result on http://sqlfiddle.com/#!2/f35ef/1/0
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