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_45 (date_of_vacancy VARCHAR, date_of_appointment VARCHAR)

### Question ###
What was the vacancy date of the manager appointed on 11 March 2010?

### Accurate SQL ###

SELECT date_of_vacancy FROM table_name_45 WHERE date_of_appointment = "11 march 2010"