If the second leg is Instituto, what is the total number of aggregate?
CREATE TABLE table_17968233_2 (aggregate VARCHAR, home__2nd_leg_ VARCHAR)
SELECT COUNT(aggregate) FROM table_17968233_2 WHERE home__2nd_leg_ = "Instituto"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_17968233_2 (aggregate VARCHAR, home__2nd_leg_ VARCHAR) Question: If the second leg is Instituto, what is the total number of aggregate? [/INST] SELECT COUNT(aggregate) FROM table_17968233_2 WHERE home__2nd_leg_ = "Instituto" </s>