Which administrative division had a 2011 population of 606,699 according to the siak database?
CREATE TABLE table_21734764_1 (administrative_division VARCHAR, population_2011_siak_database VARCHAR)
SELECT administrative_division FROM table_21734764_1 WHERE population_2011_siak_database = "606,699"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_21734764_1 (administrative_division VARCHAR, population_2011_siak_database VARCHAR) Question: Which administrative division had a 2011 population of 606,699 according to the siak database? [/INST] SELECT administrative_division FROM table_21734764_1 WHERE population_2011_siak_database = "606,699" </s>