what is the sum of totaltk when yards is less than 0?
CREATE TABLE table_name_9 (totaltk INTEGER, yards INTEGER)
SELECT SUM(totaltk) FROM table_name_9 WHERE yards < 0
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_9 (totaltk INTEGER, yards INTEGER) Question: what is the sum of totaltk when yards is less than 0? [/INST] SELECT SUM(totaltk) FROM table_name_9 WHERE yards < 0 </s>