oracle - SQL query to find SUM -



oracle - SQL query to find SUM -

i'm new sql , i've been struggling write query. want find sum of salaries employees in give department, let's 'm', , given hire date, let's '2002', ideas? i'm thinking have bring together tables somehow having trouble, i've set schema this.

jobs table , columns

jobs ------------ job_id salary hire_date

employees table , columns

employees ------------ employee_id name job_id department_id

department table , columns

departments ------------ department_id department_name

this similar way hr schema in oracle think schema should ok need help query now.

you need statement this:

select e.name, d.department_name, sum(j.salary) employees e, departments d, jobs j d.department_name = 'm' , to_char(j.hire_date, 'yyyy') = '2002' , d.department_id = e.department_id , e.job_id = j.job_id grouping e.name, d.department_name;

sql oracle sum schema

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