如何在MySQL中搜索并获取结果？

Question

table1

name   | designation
------------------
john   | engineer
mathew | IT consultant
Neil   | SAP
Tom    | webdeveloper
david  | egineer
kane   | engineer

I do have above same names in a text file too. when I search names from text file then I need to grab designation of that name then search with that designation and list names with that designation.

for example if I search by John then I want get result as john = david,kane

how can I do this with PHP and MySQL??

Answer 1

SELECT
  t2.name
FROM
  table1 t1
INNER JOIN
  table1 t2
ON
  t1.designation = t2.designation
WHERE
  t1.name = 'John'
AND
  t2.name != 'John'