Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_21564794_3 (left_st_louis INTEGER, venue VARCHAR)

### Question ###
What year did the team who played at the Scottrade Center leave the city?

### Accurate SQL ###

SELECT MIN(left_st_louis) FROM table_21564794_3 WHERE venue = "Scottrade Center"