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Finished exercises emp_dept

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Nicolás A. Ortega Froysa 2022-03-02 17:03:14 +01:00
parent a5ae238d89
commit b7601dd6d8
1 changed files with 46 additions and 2 deletions
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48
1/GBD/assignments/ej-emp-dept.sql
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@ -57,7 +57,7 @@ SELECT (SELECT MAX(sal) FROM emp WHERE deptno=10) "deptno 10",
(SELECT MAX(sal) FROM emp WHERE deptno=20) "deptno 20" FROM dual; (SELECT MAX(sal) FROM emp WHERE deptno=20) "deptno 20" FROM dual;
-- 17 -- 17
SELECT (SELECT MIN(sal) FROM emp WHERE deptno=10) "min sal depnto 10", SELECT (SELECT MIN(sal) FROM emp WHERE deptno=10) "min sal deptno 10",
(SELECT COUNT(*) FROM emp WHERE deptno=20) "employees deptno 20", (SELECT COUNT(*) FROM emp WHERE deptno=20) "employees deptno 20",
(SELECT AVG(sal) FROM emp WHERE deptno=30) "avg sal deptno 30" FROM dual; (SELECT AVG(sal) FROM emp WHERE deptno=30) "avg sal deptno 30" FROM dual;
@ -88,4 +88,48 @@ SELECT deptno, ROUND(AVG(sal), 2) FROM emp
WHERE deptno IN (SELECT DISTINCT deptno FROM emp WHERE job='SALESMAN') GROUP BY deptno; WHERE deptno IN (SELECT DISTINCT deptno FROM emp WHERE job='SALESMAN') GROUP BY deptno;
-- 24 -- 24
SELECT deptno, COUNT(*) "NUM" FROM emp GROUP BY deptno ORDER BY NUM DESC LIMIT 1; SELECT deptno FROM emp
GROUP BY deptno HAVING COUNT(*) =
(SELECT MAX(COUNT(*)) FROM emp
GROUP BY deptno);
-- 25
SELECT dname FROM dept
WHERE deptno=(
SELECT deptno FROM emp
GROUP BY deptno HAVING COUNT(*) =
(SELECT MAX(COUNT(*)) FROM emp
GROUP BY deptno));
-- 26
SELECT ename, sal FROM emp
WHERE deptno=(
SELECT deptno FROM emp
GROUP BY deptno HAVING COUNT(*) =
(SELECT MAX(COUNT(*)) FROM emp
GROUP BY deptno)) ORDER BY ename;
-- 27
SELECT ROUND(AVG(sal), 2) FROM emp
GROUP BY deptno HAVING deptno !=
(SELECT deptno FROM emp WHERE ename='SCOTT');
-- 28
SELECT ename FROM emp
WHERE mgr IN (
SELECT empno FROM emp
WHERE sal > (SELECT sal FROM emp WHERE hiredate='1981-04-02'));
-- 29
SELECT job, ename, sal FROM emp
WHERE sal > (
SELECT AVG(sal) FROM emp WHERE deptno=(
SELECT deptno FROM emp WHERE ename='MILLER'));
-- 30
SELECT ename, hiredate FROM emp
WHERE hiredate BETWEEN
(SELECT hiredate FROM emp WHERE ename='JONES')
AND
(SELECT hiredate FROM emp WHERE ename='SCOTT')
ORDER BY ename;