How many years was Louis Armstrong performing?
CREATE TABLE table_name_51 (year VARCHAR, performer_s_ VARCHAR)
SELECT COUNT(year) FROM table_name_51 WHERE performer_s_ = "louis armstrong"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_51 (year VARCHAR, performer_s_ VARCHAR) Question: How many years was Louis Armstrong performing? [/INST] SELECT COUNT(year) FROM table_name_51 WHERE performer_s_ = "louis armstrong" </s>