mysql limit rows
-- MySql
SELECT * FROM emp ORDER BY sal DESC LIMIT 5;
-- SQL Server
SELECT TOP 5 * FROM emp ORDER BY sal DESC;
-- Oracle < 11g
SELECT * FROM ( SELECT * FROM emp ORDER BY sal DESC ) WHERE ROWNUM <= 5;
-- Oracle 12c +
SELECT * FROM emp ORDER BY sal DESC FETCH FIRST 5 ROWS ONLY;mysql find max value row
SELECT t1.*
FROM employees t1
INNER JOIN (
SELECT id, max(salary) AS salary FROM employees GROUP BY id
) t2 ON t1.id = t2.id AND t1.salary = t2.salary;Copyright © 2021 Codeinu
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