What is the average goal difference using slavia sofia club?
CREATE TABLE table_name_8 (goal_difference INTEGER, club VARCHAR)
SELECT AVG(goal_difference) FROM table_name_8 WHERE club = "slavia sofia"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_8 (goal_difference INTEGER, club VARCHAR) Question: What is the average goal difference using slavia sofia club? [/INST] SELECT AVG(goal_difference) FROM table_name_8 WHERE club = "slavia sofia" </s>