What is the first episode number?
CREATE TABLE table_15187735_20 (episode INTEGER)
SELECT MIN(episode) FROM table_15187735_20
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_15187735_20 (episode INTEGER) Question: What is the first episode number? [/INST] SELECT MIN(episode) FROM table_15187735_20 </s>