Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_38 ( transfer_window VARCHAR, moving_from VARCHAR )

### Question ###
Which transfer window was moving from borussia dortmund?

### Accurate SQL ###

SELECT transfer_window FROM table_name_38 WHERE moving_from = "borussia dortmund"