how to count rows and still display all rows? mysql -
hello im trying count number of rows each employee salary.
i have 2 tables ex.
table employee
id_____________name 1..............sam 2..............greg 3..............vic 4..............steve
table salary
id____________salary 1.............10000 1.............15000 2.............30000 3.............13000 4.............90000 4.............20000
the result need is
id| name | salary| count 1 | sam | 10000 | 2 1 | sam | 15000 | 2 2 | greg | 30000 | 1 3 | vic | 13000 | 1 4 |steve | 90000 | 2 4 |steve | 90000 | 2
to summarize: have 4 employees past salaries. i'm trying create query shows list of salaries , how many salaries employee has.
here have tried 6 count...
create temporary table rates select e.id, e.name, s.salary, count(*) count employee e inner join salary s on e.id = s.id group name, s.salary order name; create temporary table sum select r.id, sum(count) sum rates r; select * rates left outer join sum s on r.id = s.id;
i've tried self join didn't work.
thanks in advance!
you want perform inner join between salary , employees tables
you want include nested select
statement.
select e.id, e.name, s.salary, (select count(*) salary s employee_id = id) count employees e inner join salary s on employees.id = salary.id
here fiddle
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