what of the total number of date where grand prix is portuguese grand prix
CREATE TABLE table_1137704_2 (date VARCHAR, grand_prix VARCHAR)
SELECT COUNT(date) FROM table_1137704_2 WHERE grand_prix = "Portuguese grand_prix"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_1137704_2 (date VARCHAR, grand_prix VARCHAR) Question: what of the total number of date where grand prix is portuguese grand prix [/INST] SELECT COUNT(date) FROM table_1137704_2 WHERE grand_prix = "Portuguese grand_prix" </s>