Name the total number of luna blastoff date for apollo 11
CREATE TABLE table_1558077_8 (lunar_blastoff_date VARCHAR, mission_name VARCHAR)
SELECT COUNT(lunar_blastoff_date) FROM table_1558077_8 WHERE mission_name = "Apollo 11"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_1558077_8 (lunar_blastoff_date VARCHAR, mission_name VARCHAR) Question: Name the total number of luna blastoff date for apollo 11 [/INST] SELECT COUNT(lunar_blastoff_date) FROM table_1558077_8 WHERE mission_name = "Apollo 11" </s>