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_12226390_3 (production_code INTEGER, written_by VARCHAR)
### Question:
what's the minimum production code written by jay sommers & dick chevillat and al schwartz
### Answer:
SELECT MIN(production_code) FROM table_12226390_3 WHERE written_by = "Jay Sommers & Dick Chevillat and Al Schwartz"