When don inglis and ralph smart are the writers how many episode numbers are there?
CREATE TABLE table_25046766_1 (episode_no VARCHAR, written_by VARCHAR)
SELECT COUNT(episode_no) FROM table_25046766_1 WHERE written_by = "Don Inglis and Ralph Smart"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_25046766_1 (episode_no VARCHAR, written_by VARCHAR) Question: When don inglis and ralph smart are the writers how many episode numbers are there? [/INST] SELECT COUNT(episode_no) FROM table_25046766_1 WHERE written_by = "Don Inglis and Ralph Smart" </s>