选择一年制作几部电影

Question

I have two rows in my database, one row is for the movies, the other one is for the year a movie was made

I would like to select every movies and check how many were made in a specific year, it has to be every year.

The output should look like this:

2018 = 819
2017 = 910
2016 = 128
2015 = 539

What I tried:

SELECT LEFT(movie,4), COUNT(year) FROM movies GROUP BY LEFT(movie,4);

but it only outputs the name of the movies

Thanks for reading.

Answer 1

尝试这个

Select year, count(1) from movies group by year

Answer 2

试试这个简单的查询使用GROUP BY

Select count(*),year from movies group by year

Answer 3

请试试

Select year, count(movie) from movies group by year