| --! qt:dataset:srcpart |
| set hive.explain.user=false; |
| set datanucleus.cache.collections=false; |
| set hive.stats.autogather=false; |
| set hive.exec.dynamic.partition=true; |
| |
| -- test analyze table ... compute statistics noscan |
| |
| -- 1. test full spec |
| create table analyze_srcpart_n0 like srcpart; |
| insert overwrite table analyze_srcpart_n0 partition (ds, hr) select * from srcpart where ds is not null; |
| explain |
| analyze table analyze_srcpart_n0 PARTITION(ds='2008-04-08',hr=11) compute statistics noscan; |
| analyze table analyze_srcpart_n0 PARTITION(ds='2008-04-08',hr=11) compute statistics noscan; |
| analyze table analyze_srcpart_n0 PARTITION(ds='2008-04-08',hr=12) compute statistics noscan; |
| -- confirm result |
| describe formatted analyze_srcpart_n0 PARTITION(ds='2008-04-08',hr=11); |
| describe formatted analyze_srcpart_n0 PARTITION(ds='2008-04-08',hr=12); |
| describe formatted analyze_srcpart_n0 PARTITION(ds='2008-04-09',hr=11); |
| describe formatted analyze_srcpart_n0 PARTITION(ds='2008-04-09',hr=12); |
| describe formatted analyze_srcpart_n0; |
| drop table analyze_srcpart_n0; |
| |
| -- 2. test partial spec |
| create table analyze_srcpart_partial like srcpart; |
| insert overwrite table analyze_srcpart_partial partition (ds, hr) select * from srcpart where ds is not null; |
| explain |
| analyze table analyze_srcpart_partial PARTITION(ds='2008-04-08') compute statistics noscan; |
| analyze table analyze_srcpart_partial PARTITION(ds='2008-04-08') compute statistics noscan; |
| -- confirm result |
| describe formatted analyze_srcpart_partial PARTITION(ds='2008-04-08',hr=11); |
| describe formatted analyze_srcpart_partial PARTITION(ds='2008-04-08',hr=12); |
| describe formatted analyze_srcpart_partial PARTITION(ds='2008-04-09',hr=11); |
| describe formatted analyze_srcpart_partial PARTITION(ds='2008-04-09',hr=12); |
| drop table analyze_srcpart_partial; |
| |
| |
| |
