I want to know how can I execute this instruction on dynamic SQL

I need to execute a process when inserting, updating or deleting.

A windows service searches for files on a directory each 1 hour.

When this windows service find the text file, it executes a process.

The problem was solved:

SELECT DISTINCT fun.function_desc, fun.function_code

  FROM table_1 fun

 INNER JOIN table_2 itm

    ON fun.function_code = itm.function_code

 INNER JOIN table_3 par

    ON itm.parameter_code = par.parameter_code

 WHERE par.class_code = 1

  ...