| set hive.mapred.mode=nonstrict; |
| set hive.stats.column.autogather=true; |
| |
| drop table p_n1; |
| |
| CREATE TABLE p_n1(insert_num int, c1 tinyint, c2 smallint); |
| |
| desc formatted p_n1; |
| |
| insert into p_n1 values (1,22,333); |
| |
| desc formatted p_n1; |
| |
| alter table p_n1 replace columns (insert_num int, c1 STRING, c2 STRING); |
| |
| desc formatted p_n1; |
| |
| desc formatted p_n1 insert_num; |
| desc formatted p_n1 c1; |
| |
| insert into p_n1 values (2,11,111); |
| |
| desc formatted p_n1; |
| |
| desc formatted p_n1 insert_num; |
| desc formatted p_n1 c1; |
| |
| set hive.stats.column.autogather=false; |
| |
| drop table p_n1; |
| |
| CREATE TABLE p_n1(insert_num int, c1 tinyint, c2 smallint); |
| |
| desc formatted p_n1; |
| |
| insert into p_n1 values (1,22,333); |
| |
| desc formatted p_n1; |
| |
| alter table p_n1 replace columns (insert_num int, c1 STRING, c2 STRING); |
| |
| desc formatted p_n1; |
| |
| desc formatted p_n1 insert_num; |
| desc formatted p_n1 c1; |
| |
| insert into p_n1 values (2,11,111); |
| |
| desc formatted p_n1; |
| |
| desc formatted p_n1 insert_num; |
| desc formatted p_n1 c1; |
