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_261906_2 ( joined_mac INTEGER, nickname VARCHAR )

### Question ###
What year did the the school with the nickname eagles join the mac?

### Accurate SQL ###

SELECT MIN(joined_mac) FROM table_261906_2 WHERE nickname = "Eagles"