What is the least value for average attendance when average on previous season is +644?
CREATE TABLE table_2970978_1 (ave_attendance INTEGER, ___ave_on_prev_season VARCHAR)
SELECT MIN(ave_attendance) FROM table_2970978_1 WHERE ___ave_on_prev_season = "+644"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_2970978_1 (ave_attendance INTEGER, ___ave_on_prev_season VARCHAR) Question: What is the least value for average attendance when average on previous season is +644? [/INST] SELECT MIN(ave_attendance) FROM table_2970978_1 WHERE ___ave_on_prev_season = "+644" </s>