How many weights are there when the flange with is 304?
CREATE TABLE table_2071644_2 (weight__kg_m_ VARCHAR, flange_width__mm_ VARCHAR)
SELECT COUNT(weight__kg_m_) FROM table_2071644_2 WHERE flange_width__mm_ = 304
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_2071644_2 (weight__kg_m_ VARCHAR, flange_width__mm_ VARCHAR) Question: How many weights are there when the flange with is 304? [/INST] SELECT COUNT(weight__kg_m_) FROM table_2071644_2 WHERE flange_width__mm_ = 304 </s>