Hi, We have created a table (eg, t1), and a global index of one numeric column of t1 (eg, timestamp). Now we want to find the largest value of timestamp, we have tried two approaches:
1. select max(timestamp) from t1; This query takes forever to finish, so I think it maybe doing a full table scan/comparison . 2. select timestamp from t1 order by timestamp desc limit 1; This query finished fast, but the result it returns is far from the largest value. It seems it just return the largest value for a certain range of data. Did anyone else encounter this issue/have any suggestion? -- Thanks, Yufan
