Vitaliy created HIVE-21995:
------------------------------
Summary: WHERE clause return null in column
Key: HIVE-21995
URL: https://issues.apache.org/jira/browse/HIVE-21995
Project: Hive
Issue Type: Bug
Reporter: Vitaliy
Attachments: image-2019-07-15-18-01-06-547.png, picture.png,
picture2.png, picture3.png
Try to SELECT values from druid external table with WHERE clause.
Create external table
```
CREATE EXTERNAL TABLE IF NOT EXISTS druid_wikiticker
STORED BY 'org.apache.hadoop.hive.druid.DruidStorageHandler'
TBLPROPERTIES ("druid.datasource" = "wikiticker");
```
and try select values from external table
```
SELECT `__time`, `namespace`
FROM druid_wikiticker
WHERE `namespace` = 'Main'
```
[Waiting]
All values are selected
[Reality]
Column by WHERE clause is null
Error stay here:
!image-2019-07-15-18-01-06-547.png!
Where i use 'GROUP BY' OR 'TRIM' Output has another value and return all data
what i need. When i execute in druid query, vc0 return null. After i change
"expression":"`namespace`" and execute query in druid, druid return real values.
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