查看某个表的索引使用情况 select relname, indexrelname, idx_scan, idx_tup_read, idx_tup_fetch from pg_stat_user_indexes where relname = table_name order by idx_scan asc, idx_tup_read asc, idx_tup_fetch asc; 查看所有表的索引的使用情况 select relname, indexrelname, idx_scan, id