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_17798548_4 ( date_released VARCHAR, season VARCHAR )

### Question ###
On how many dates was the complete 4th series released?

### Accurate SQL ###

SELECT COUNT(date_released) FROM table_17798548_4 WHERE season = "The Complete 4th Series"