How many players are at the DT position? 
CREATE TABLE table_21321804_3 (player VARCHAR, position VARCHAR)
SELECT COUNT(player) FROM table_21321804_3 WHERE position = "DT"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_21321804_3 (player VARCHAR, position VARCHAR) Question: How many players are at the DT position?  [/INST] SELECT COUNT(player) FROM table_21321804_3 WHERE position = "DT" </s>