SQL

SELECT ...
FROM emp
JOIN dept ON emp.deptno = dept.deptno

SELECT ...
FROM emp
LEFT OUTER JOIN dept ON emp.deptno = dept.deptno

SELECT ...
FROM emp
RIGHT OUTER JOIN dept ON emp.deptno = dept.deptno

SELECT ...
FROM emp
FULL JOIN dept ON emp.deptno = dept.deptno

SELECT ...
FROM emp
CROSS JOIN dept

SELECT ...
FROM emp, dept
WHERE emp.deptno = dept.deptno

SELECT ...
FROM emp, dept
WHERE emp.deptno(+) = dept.deptno

SELECT ...
FROM emp, dept
WHERE emp.deptno = dept.deptno(+)

SELECT EMPNO, ENAME, JOB, MGR, SQL
FROM   EMP
LIMIT 10 offset 20

SELECT * FROM (SELECT 
    EMPNO, ENAME, JOB, MGR, SQL,
    rank() over(partition BY JOB ORDER BY HIRE_DATE DESC 
) RN
FROM EMP
) 
WHERE RN BETWEEN 20 AND 30
 
SELECT EMPNO, ENAME, JOB, MGR, SAL,
    rank() over
      (ORDER BY SAL DESC NULLS LAST) AS RANK,
    dense_rank() over
      (ORDER BY SAL DESC NULLS LAST) AS DRANK
FROM EMP
ORDER BY SAL DESC NULLS last;

SELECT top 10 EMPNO, ENAME, JOB, MGR 
FROM EMP

SET rowcount 10
SELECT COLUMNS
FROM TABLE

SELECT first 10 COLUMNS
FROM TABLE