SQL

select last row mysql

SELECT
  (SELECT * FROM tableName ORDER BY col1 LIMIT 1)        AS first,
  (SELECT * FROM tableName ORDER BY col1 DESC LIMIT 1)   AS last
;

select first and last row mysql

(select *from DemoTable694 order by EmployeeId ASC LIMIT 1)
UNION
(select *from DemoTable694 order by EmployeeId DESC LIMIT 1);