Counting and grouping columns with multiple JOIN's - mysql

Question

I have 3 tables:
Table A
----------------------------
id | data
----------------------------
1 nothing important
2 nothing important
3 nothing important
Table B
-----------------------------------------
id | table_a_id | table_c_id
-----------------------------------------
1 1 1
2 1 2
3 1 3
Table C
----------------------------
id | name
----------------------------
1 Bob Saget
2 Neil deGrasse Tyson
3 Mike Tyson
Table B and C are 1:1 relationship, whereas Table A and Table B are a one to many relationship.
I want to get a count of the JOINed rows in Table B.
Here is my attempt that does not work:
SELECT count(*) AS count, tC.name FROM table_a tA
LEFT JOIN table_b tB ON tA.id = tB.table_a_id
LEFT JOIN table_c tC ON tC.id = tB.table_c_id
GROUP BY tA.id, tC.name
This is what I'm hoping the result will look like:
Result
----------------------------
count | name
----------------------------
3 Bob Saget
3 Neil deGrasse Tyson
3 Mike Tyson
Count represents the number of rows that were JOINed from Table B. In this case, 3 rows from table B carry a foreign key for table A.
Use can use this fiddle.

Answer 1

If you want to count how many rows in a relate to each c, then c has to come first in the from clause, followed by left joins to the other tables.
Also, you need to a.id from the group by clause - otherwise, you would probably get just one (or zero) row per group.
Other things to consider:
you are left joining, so you should count something from a rather than just count(*), so you get 0 for unmatched rows (instead of 1 with count(*))
I would recommend grouping by the primary key of c rather than on the name, in case two different ids might have the same name
So:
SELECT count(a.id) AS count, c.name
FROM table_c c
LEFT JOIN table_b b ON c.id = b.table_c_id
LEFT JOIN table_a a ON a.id = b.table_a_id
GROUP BY c.id