Ryu Kobayashi created HIVE-27370:
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Summary: SUBSTR UDF return '?' against 4-bytes character
Key: HIVE-27370
URL: https://issues.apache.org/jira/browse/HIVE-27370
Project: Hive
Issue Type: Bug
Components: UDF
Affects Versions: All Versions
Reporter: Ryu Kobayashi
SUBSTR doesn't seem to support 4-byte characters. This also happens in master
branch. Also, this does not happen in vectorized mode, so it is a problem
specific to non-vectorized mode. An example is below:
{code:java}
-- vectorized mode
create temporary table foo (str string) stored as orc;
insert into foo values('安佐町大字久地字野𨵱4614番地'), ('あa🤎いiうu');
SELECT
SUBSTR(str, 1, 10) as a1,
SUBSTR(str, 10, 3) as a2,
SUBSTR(str, -7) as a3,
substr(str, 1, 3) as b1,
substr(str, 3) as b2,
substr(str, -5) as b3
from foo
;
安佐町大字久地字野𨵱 𨵱4614番地 安佐町 町大字久地字野𨵱4614番地 614番地
あa🤎 あa🤎いiうu あa🤎 🤎いiうu 🤎いiうu {code}
{code:java}
-- non-vectorized
SELECT
SUBSTR('安佐町大字久地字野𨵱4614番地', 1, 10) as a1,
SUBSTR('安佐町大字久地字野𨵱4614番地', 10, 3) as a2,
SUBSTR('安佐町大字久地字野𨵱4614番地', -7) as a3,
substr('あa🤎いiうu', 1, 3) as b1,
substr('あa🤎いiうu', 3) as b2,
substr('あa🤎いiうu', -5) as b3
;
安佐町大字久地字野? �4 ?4614番地 あa? �いiうu ?いiうu{code}
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