## Trying to get count of episodes in a series [closed] - sql

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I want to figure out total number of episodes in a series. Lets say this series has 3 seasons, 10 episodes each season. I want a count that would provide the value of 30 (30 total episodes). The kicker is that this series has aired say in 2 different countries, some countries got only 1 season, and the other got 3. I still want to only pull the 30 unique total episode count.
The series has its own ID Each season has its own ID Each episode has its own ID Each country has its own ID
How can I accomplish this?
I am looking to get a total count of 30.
Ive tried various statements...
(CONCAT(seasonid,'_', episodeid, '_',seriesid,'_', countryid)) as a
count(distinct(CONCAT(seasonid,'_', episodeid, '_',seriesid,'_', countryid))) + sum(case when a is null then 0 else 1 end) as count
sum(case when (count(distinct (CONCAT(seasonid,'_', episodeid, '_',seriesid)) )) is not null then 1 else 0 end) as count
count( distinct(CONCAT(seriesid,'_', episodeid ))) as count

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