Sqlite3 repeats value in other dates - sqlite

Question

.The involved tables:
data_incidencia.
data_ticket.
My query is the following
select t1.hurtos, t2.fallas,t3.ticket, t1.fecha_carga
from
(select count(ttc) as hurtos,
fecha_carga from data_incidencia
where campo_key_id = 2
group by fecha_carga) t1,
(select count(ttc) as fallas,
fecha_carga from data_incidencia
where campo_key_id = 1
group by fecha_carga) t2,
(select count(ticket) as ticket,
fecha_solicitud as fecha_carga from data_ticket ) t3
where t1.fecha_carga =t2.fecha_carga;
and the output:
but the desired output is:
notice that "ticket" is repeating value in 2018-05-16 where is no tickets, is probably something dumb as case when or group by, but I can't figure it out.
Any ideas of how should i fix this query ?

Answer 1

You have three subqueries, t1, t2, and t3.
t1 and t2 are joined, but t3 is not, so you get an implicit cross join.
The column names you're using look as if you want to join all three on the same column:
SELECT t1.hurtos, t2.fallas, t3.ticket, t1.fecha_carga
FROM (...) AS t1,
(...) AS t2,
(...) AS t3
WHERE t1.fecha_carga = t2.fecha_carga
AND t1.fecha_carga = t3.fecha_carga;
And implicit joins are outdated since 1992; better use explicit joins:
SELECT t1.hurtos, t2.fallas, t3.ticket, fecha_carga
FROM (...) AS t1
JOIN (...) AS t2 USING (fecha_carga)
JOIN (...) AS t3 USING (fecha_carga);