| --! qt:dataset:srcpart |
| set hive.tez.dynamic.partition.pruning=false; |
| set hive.auto.convert.join=false; |
| |
| create table t (ds string,hr int); |
| insert into t values ('2008-04-08',11); |
| |
| select 'involved partitions differ: expected 2 separate scans (could be improved)'; |
| explain |
| select count(*) from srcpart where ds = '2008-04-08' and hr = 11 |
| union |
| select count(*) from srcpart where key > '3'; |
| |
| |
| select 'expected 1 as both scans all the partitions'; |
| explain |
| select count(*) from srcpart |
| join t on (srcpart.ds = t.ds and srcpart.hr = t.hr) |
| union |
| select count(*) from srcpart where key > '3'; |
| |
