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19. Write an SQL query to fetch worker names with salaries >= 50000 and <= 100000. SELECT CONCAT(FIRST_NAME, ' ', LAST_NAME) As Worker_Name, Salary FROM worker WHERE WORKER_ID IN (SELECT WORKER_ID FROM worker WHERE Salary BETWEEN 50000 AND 100000);
How do you practice complex SQL queries?
Advanced SQL Techniques for Complex Queries
1SELECT columns FROM table1 INNER JOIN ( SELECT columns FROM table2 WHERE conditions ) t2 WHERE conditions;2WITH t2 AS ( SELECT columns FROM table2 WHERE conditions ) SELECT columns FROM table1 INNER JOIN t2 WHERE conditions;
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