Name the sum of quantity for before 2011 model slf-230
CREATE TABLE table_name_60 (quantity INTEGER, year VARCHAR, model VARCHAR)
SELECT SUM(quantity) FROM table_name_60 WHERE year < 2011 AND model = "slf-230"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_60 (quantity INTEGER, year VARCHAR, model VARCHAR) Question: Name the sum of quantity for before 2011 model slf-230 [/INST] SELECT SUM(quantity) FROM table_name_60 WHERE year < 2011 AND model = "slf-230" </s>