Database: aan_1
Question: What are the venues and years where Columbia University had papers ?
SQL:
select distinct t1.venue ,  t1.year from paper as t1 join author_list as t2 on t1.paper_id  =  t2.paper_id join affiliation as t3 on t2.affiliation_id  =  t3.affiliation_id where t3.name = "columbia university"