Create a complex view that joining with three tables.
SQL
SQL stands for Structured Query Language, is a form of communication that uses queries structured in a specific format to store, manage & retrieve data from a relational database.
Queries
A query is a type of computer programming language that is used to retrieve data from a database. Databases are useful in a variety of ways. They enable the retrieval of records or parts of records, as well as the performance of various calculations prior to displaying the results. A search query is one type of query that many people perform several times per day. A search query is executed every time you use a search engine to find something. When you press the Enter key, the keywords are sent to the search engine, where they are processed by an algorithm that retrieves related results from the search index. Your query's results are displayed on a search engine results page, or SER.
CREATE TABLE employees8(
employee_id NUMBER(10) PRIMARY KEY,
first_name VARCHAR(25) UNIQUE,
last_name VARCHAR(25) UNIQUE,
job_id NUMBER(3),
salary NUMBER(6) NOT NULL,
department_name VARCHAR2(20));
CREATE TABLE jobs8(
job_id NUMBER(3) PRIMARY KEY,
job_title VARCHAR2(25),
min_salary NUMBER(4)check(min_salary >=2900),
max_salary NUMBER(6)check(max_salary<=100000)
);
CREATE TABLE departments8(
department_id NUMBER(2) PRIMARY KEY,
department_name VARCHAR2(30),
location_name VARCHAR2(15) DEFAULT 'Istanbul'
);
how can I do this question according to these 3 tables ?
Create a complex view that joining with three tables.
Trending now
This is a popular solution!
Step by step
Solved in 4 steps with 1 images
