28 lines
1.4 KiB
MySQL
28 lines
1.4 KiB
MySQL
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-- relation { [ join_type ] JOIN [ LATERAL ] relation [ join_criteria ] | NATURAL join_type JOIN [ LATERAL ] relation }
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-- Use employee and department tables to demonstrate different type of joins.
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SELECT * FROM employee;
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SELECT * FROM department;
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-- Use employee and department tables to demonstrate inner join.
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SELECT id, name, employee.deptno, deptname FROM employee INNER JOIN department ON employee.deptno = department.deptno;
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-- Use employee and department tables to demonstrate left join.
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SELECT id, name, employee.deptno, deptname FROM employee LEFT JOIN department ON employee.deptno = department.deptno;
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-- Use employee and department tables to demonstrate right join.
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SELECT id, name, employee.deptno, deptname FROM employee RIGHT JOIN department ON employee.deptno = department.deptno;
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-- Use employee and department tables to demonstrate full join.
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SELECT id, name, employee.deptno, deptname FROM employee FULL JOIN department ON employee.deptno = department.deptno;
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-- Use employee and department tables to demonstrate cross join.
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SELECT id, name, employee.deptno, deptname FROM employee CROSS JOIN department;
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-- Use employee and department tables to demonstrate semi join.
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SELECT * FROM employee SEMI JOIN department ON employee.deptno = department.deptno;
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-- Use employee and department tables to demonstrate anti join.
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SELECT * FROM employee ANTI JOIN department ON employee.deptno = department.deptno;
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