57 lines
1.8 KiB
SQL
57 lines
1.8 KiB
SQL
-- 1
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SELECT ename FROM emp WHERE sal > (SELECT sal FROM emp WHERE ename = 'JAMES');
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-- 2
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SELECT ename FROM emp WHERE deptno = (SELECT deptno FROM emp WHERE ename='SMITH');
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-- 3
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SELECT ROUND(AVG(sal), 2) FROM emp WHERE deptno = (SELECT deptno FROM emp WHERE ename='JAMES');
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-- 4
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SELECT ename FROM emp WHERE hiredate < (SELECT hiredate FROM emp WHERE ename='MILLER');
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-- 5
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SELECT ename FROM emp WHERE deptno = (SELECT deptno FROM emp WHERE ename='FORD') AND
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sal > (SELECT sal FROM emp WHERE ename='JAMES');
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-- 6
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SELECT dept.dname FROM emp JOIN dept ON emp.deptno = dept.deptno WHERE ename='SCOTT';
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-- 7
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SELECT COUNT(*) FROM emp WHERE sal < (SELECT sal FROM emp WHERE ename='MILLER');
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-- 8
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SELECT dept.loc FROM emp JOIN dept ON emp.deptno = dept.deptno WHERE emp.ename='KING';
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-- 9
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SELECT DISTINCT dept.dname FROM emp JOIN dept ON emp.deptno = dept.deptno WHERE emp.job='CLERK';
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-- 10
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SELECT DISTINCT dname FROM dept WHERE deptno NOT IN (SELECT deptno FROM emp WHERE job = 'ANALYST');
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-- 11
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SELECT ename FROM emp JOIN dept ON emp.deptno = dept.deptno WHERE dept.loc = 'DALLAS' ORDER BY ename;
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-- 12
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SELECT ename, sal FROM emp WHERE job = (SELECT job FROM emp WHERE ename='JONES') AND ename != 'JONES';
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-- 13
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SELECT * FROM emp
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WHERE deptno = (SELECT deptno FROM emp WHERE ename='SCOTT') AND
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sal > (SELECT sal FROM emp WHERE ename='SMITH') AND
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job = (SELECT job FROM emp WHERE ename='MILLER');
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-- 14
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SELECT * FROM emp
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WHERE deptno = (SELECT deptno FROM emp WHERE ename='MARTIN') AND
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sal = (SELECT sal FROM emp WHERE ename='MARTIN');
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-- 15
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SELECT ename, sal FROM emp
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WHERE deptno = (SELECT deptno FROM emp WHERE ename='FORD') AND
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sal = (SELECT sal FROM emp WHERE ename='FORD')
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ORDER BY ename ASC, sal DESC;
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-- 16
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SELECT MAX(sal) FROM emp GROUP BY deptno HAVING deptno IN (10, 20);
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