SQL how can I get list of users and departments with filter by position? - sql

Question

Please help me, how can i get a list of users of the department with a filter by position?
CREATE TABLE COMPANY
(
ID INT GENERATED BY DEFAULT AS IDENTITY,
NAME VARCHAR(255),
PRIMARY KEY (ID),
UNIQUE KEY COMPANY_NAME (NAME)
);
CREATE TABLE USER
(
ID INT GENERATED BY DEFAULT AS IDENTITY,
NAME VARCHAR(255),
LASTNAME VARCHAR(255),
DATE_OF_BIRTH DATE ,
PRIMARY KEY (ID),
);
CREATE TABLE POSITION
(
ID INT NOT NULL GENERATED BY DEFAULT AS IDENTITY,
POSITION VARCHAR (50),
USERID INT NOT NULL,
PRIMARY KEY (ID),
FOREIGN KEY (USERID) REFERENCES USER(ID)
);
CREATE TABLE DEPARTMENT
(
ID INT GENERATED BY DEFAULT AS IDENTITY,
USER_ID INT NOT NULL,
COMPANY_ID INT NOT NULL,
DEPARTMENT_CATEGORY VARCHAR(50),
PRIMARY KEY (ID),
FOREIGN KEY (USER_ID) REFERENCES USER(ID),
FOREIGN KEY (COMPANY_ID) REFERENCES COMPANY(ID)
);
CREATE TABLE CATEGORY
(
ID INT NOT NULL GENERATED BY DEFAULT AS IDENTITY,
NAME VARCHAR (50),
PRIMARY KEY (ID)
);
CREATE TABLE DEPARTMENT_CATEGORY
(
DEPARTMENT_ID INT NOT NULL,
CATEGORY_ID INT NOT NULL,
FOREIGN KEY (DEPARTMENT_ID) REFERENCES DEPARTMENT(ID),
FOREIGN KEY (CATEGORY_ID) REFERENCES CATEGORY(ID)
);
Please help me!!

Answer 1

it look like you wanted to display results from department and position table that has both the data you need, but be specific about your filter (position) as u need to provide it in your where clause
select user_ID, department
from department as a
join user as b
on a. user_id = b. user_id
where position = 'put the specific position you wanted to be filtered here'
but your two userID columns are written differently as (User_id or USERID) correct that too not get failure result when you execute the task