How can I join 7 tables where the column (which exists in all tables) is equal to the same content in all tables?
I saw how an inner join 2 of a table where the column is equal to the content in the other column. but how do I do this with 7 tables?
Thanks everyone, I figured it out after a long time. this seems to work
SELECT *
FROM
tbl_school
INNER JOIN tbl_apprequirments ON (tbl_school.schoolname = tbl_apprequirments.schoolname)
INNER JOIN tbl_citygallery ON (tbl_apprequirments.schoolname = tbl_citygallery.schoolname)
INNER JOIN tbl_schoolgallery ON (tbl_citygallery.schoolname = tbl_schoolgallery.schoolname)
INNER JOIN tbl_livingexp ON (tbl_schoolgallery.schoolname = tbl_livingexp.schoolname)
INNER JOIN tbl_tuition ON (tbl_livingexp.schoolname = tbl_tuition.schoolname)
where tbl_school.schoolname = 'glendale community college';
0
sarmenhb
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3 answers
SELECT * FROM t1 JOIN t2 JOIN t3 JOIN t4 JOIN t5
ON (t2.c=t1.c AND t3.c=t1.c AND t4.c=t1.c AND t5.c=t1.c)
MySQL provides a shortcut for this:
SELECT * FROM t1 JOIN (t2, t3, t4, t5)
ON (t2.c=t1.c AND t3.c=t1.c AND t4.c=t1.c AND t5.c=t1.c)
This example is for 5 tables. You can repeat as needed.
See MySQL join syntax .
Edit: After seeing the clarification from sarmenhb, I think this query also works:
SELECT * FROM t1 JOIN (t2, t3, t4, t5, t6, t7)
USING (schoolname)
WHERE t1.schoolname = 'name'
+3
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