How many people wrote the episode that had 6.34 million viewers?
CREATE TABLE table_17641206_2 (written_by VARCHAR, viewership VARCHAR)
SELECT COUNT(written_by) FROM table_17641206_2 WHERE viewership = "6.34 million"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_17641206_2 (written_by VARCHAR, viewership VARCHAR) Question: How many people wrote the episode that had 6.34 million viewers? [/INST] SELECT COUNT(written_by) FROM table_17641206_2 WHERE viewership = "6.34 million" </s>