Which number of Years has a Venue of old trafford, and an Opposition of yorkshire?
CREATE TABLE table_name_30 (year VARCHAR, venue VARCHAR, opposition VARCHAR)
SELECT COUNT(year) FROM table_name_30 WHERE venue = "old trafford" AND opposition = "yorkshire"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_30 (year VARCHAR, venue VARCHAR, opposition VARCHAR) Question: Which number of Years has a Venue of old trafford, and an Opposition of yorkshire? [/INST] SELECT COUNT(year) FROM table_name_30 WHERE venue = "old trafford" AND opposition = "yorkshire" </s>