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 (length_overall VARCHAR, designation VARCHAR)

### Question ###
What is the overall length with a designation of s-8ko?

### Accurate SQL ###

SELECT length_overall FROM table_name_38 WHERE designation = "s-8ko"