| set hive.stats.column.autogather=false; |
| set hive.stats.dbclass=fs; |
| set hive.compute.query.using.stats=true; |
| set hive.explain.user=false; |
| create table over10k_n23( |
| t tinyint, |
| si smallint, |
| i int, |
| b bigint, |
| f float, |
| d double, |
| bo boolean, |
| s string, |
| ts timestamp, |
| `dec` decimal, |
| bin binary) |
| row format delimited |
| fields terminated by '|' |
| TBLPROPERTIES ("hive.serialization.decode.binary.as.base64"="false"); |
| |
| load data local inpath '../../data/files/over10k' into table over10k_n23; |
| |
| create table stats_tbl_part_n0( |
| t tinyint, |
| si smallint, |
| i int, |
| b bigint, |
| f float, |
| d double, |
| bo boolean, |
| s string, |
| ts timestamp, |
| `dec` decimal, |
| bin binary) partitioned by (dt int); |
| |
| |
| from over10k_n23 |
| insert overwrite table stats_tbl_part_n0 partition (dt=2010) select t,si,i,b,f,d,bo,s,ts,`dec`,bin where t>0 and t<30 |
| insert overwrite table stats_tbl_part_n0 partition (dt=2014) select t,si,i,b,f,d,bo,s,ts,`dec`,bin where t > 30 and t<60; |
| |
| analyze table stats_tbl_part_n0 partition(dt) compute statistics; |
| analyze table stats_tbl_part_n0 partition(dt=2010) compute statistics for columns t,si,i,b,f,d,bo,s,bin; |
| analyze table stats_tbl_part_n0 partition(dt=2014) compute statistics for columns t,si,i,b,f,d,bo,s,bin; |
| |
| explain |
| select count(*), count(1), sum(1), count(s), count(bo), count(bin), count(si), max(i), min(b), max(f), min(d) from stats_tbl_part_n0 where dt = 2010; |
| select count(*), count(1), sum(1), count(s), count(bo), count(bin), count(si), max(i), min(b), max(f), min(d) from stats_tbl_part_n0 where dt = 2010; |
| explain |
| select count(*), count(1), sum(1), sum(2), count(s), count(bo), count(bin), count(si), max(i), min(b), max(f), min(d) from stats_tbl_part_n0 where dt > 2010; |
| select count(*), count(1), sum(1), sum(2), count(s), count(bo), count(bin), count(si), max(i), min(b), max(f), min(d) from stats_tbl_part_n0 where dt > 2010; |
| |
| select count(*) from stats_tbl_part_n0; |
| select count(*)/2 from stats_tbl_part_n0; |
| drop table stats_tbl_part_n0; |
| set hive.compute.query.using.stats=false; |