When the production (mt) is 650000, what is the total number of rank?
CREATE TABLE table_21109892_1 (rank VARCHAR, production__mt_ VARCHAR)
SELECT COUNT(rank) FROM table_21109892_1 WHERE production__mt_ = 650000
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_21109892_1 (rank VARCHAR, production__mt_ VARCHAR) Question: When the production (mt) is 650000, what is the total number of rank? [/INST] SELECT COUNT(rank) FROM table_21109892_1 WHERE production__mt_ = 650000 </s>