How many items are listed under viewers column when the bbd three weekly ranking was 1?
CREATE TABLE table_24399615_4 (viewers VARCHAR, bbc_three_weekly_ranking VARCHAR)
SELECT COUNT(viewers) FROM table_24399615_4 WHERE bbc_three_weekly_ranking = "1"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_24399615_4 (viewers VARCHAR, bbc_three_weekly_ranking VARCHAR) Question: How many items are listed under viewers column when the bbd three weekly ranking was 1? [/INST] SELECT COUNT(viewers) FROM table_24399615_4 WHERE bbc_three_weekly_ranking = "1" </s>