How many trains depart at 17:30?
CREATE TABLE table_27011761_2 (train_no VARCHAR, departure VARCHAR)
SELECT COUNT(train_no) FROM table_27011761_2 WHERE departure = "17:30"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_27011761_2 (train_no VARCHAR, departure VARCHAR) Question: How many trains depart at 17:30? [/INST] SELECT COUNT(train_no) FROM table_27011761_2 WHERE departure = "17:30" </s>