Which Thickness has a Diameter of 21.9mm?
CREATE TABLE table_name_56 (thickness VARCHAR, diameter VARCHAR)
SELECT thickness FROM table_name_56 WHERE diameter = "21.9mm"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_56 (thickness VARCHAR, diameter VARCHAR) Question: Which Thickness has a Diameter of 21.9mm? [/INST] SELECT thickness FROM table_name_56 WHERE diameter = "21.9mm" </s>