How many networks are there that have a channel number 7?
CREATE TABLE table_160728_4 (network VARCHAR, channel VARCHAR)
SELECT COUNT(network) FROM table_160728_4 WHERE channel = 7
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_160728_4 (network VARCHAR, channel VARCHAR) Question: How many networks are there that have a channel number 7? [/INST] SELECT COUNT(network) FROM table_160728_4 WHERE channel = 7 </s>