Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### 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