How to Truncate Table from AX 2009?

Sometimes you need to truncate any table to fill it again for example when you try to something with dummy data then do the following :

1- go to the administration module 

2- go to periodic menu 

3- choose the SQL administration 

4- choose the table you want truncate it from the all table collapse 

5- click on the table action button

6- select truncate  

7- click OK