[英]Hive: select by alias and order by column name
Current query, which doesn't work: 当前查询,不起作用:
select datetime as a
from coffee_chain
order by datetime;
Can some one know the reason. 有人可以知道原因。
use 采用
select datetime as a from coffee_chain order by a;
https://issues.apache.org/jira/browse/HIVE-1449 https://issues.apache.org/jira/browse/HIVE-1449
hive> create table coffee_chain (datetime int);
OK
hive> select datetime as a from coffee_chain order by datetime;
FAILED: SemanticException Line 0:-1 Invalid table alias or column reference 'datetime': (possible column names are: a)
hive> select datetime as a from coffee_chain order by a;
OK
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