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_12078626_1 ( date_of_completion VARCHAR, success VARCHAR )

### Question ###
what's the date of completion where success is yes

### Accurate SQL ###

SELECT date_of_completion FROM table_12078626_1 WHERE success = "Yes"