How many production codes are there for episode number 45?
CREATE TABLE table_2602958_4 (prod_code VARCHAR, no VARCHAR)
SELECT COUNT(prod_code) FROM table_2602958_4 WHERE no = 45
### Context: CREATE TABLE table_2602958_4 (prod_code VARCHAR, no VARCHAR) ### Question: How many production codes are there for episode number 45? ### Answer: SELECT COUNT(prod_code) FROM table_2602958_4 WHERE no = 45