How many faculty members have 20 years of experience? 
CREATE TABLE table_17384764_1 (designation VARCHAR, experience VARCHAR)
SELECT COUNT(designation) FROM table_17384764_1 WHERE experience = "20 years"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_17384764_1 (designation VARCHAR, experience VARCHAR) Question: How many faculty members have 20 years of experience?  [/INST] SELECT COUNT(designation) FROM table_17384764_1 WHERE experience = "20 years" </s>