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https://issues.apache.org/jira/browse/CALCITE-1392?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15529843#comment-15529843
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Maciej Bryński commented on CALCITE-1392:
-----------------------------------------
I didn't.
And I don't have "__time" column in my data source. I was sure that this is
meta column created by calcite itself.
Especially with this quote from calcite page
https://calcite.apache.org/docs/druid_adapter.html
{quote}
Simplifying the modelPermalink
If less metadata is provided in the model, the Druid adapter can discover it
automatically from Druid. Here is a schema equivalent to the previous one but
with dimensions, metrics and timestampColumn removed:
{quote}
> Unable to specify time granularity for Druid
> --------------------------------------------
>
> Key: CALCITE-1392
> URL: https://issues.apache.org/jira/browse/CALCITE-1392
> Project: Calcite
> Issue Type: Bug
> Components: druid
> Affects Versions: 1.9.0
> Reporter: Maciej Bryński
> Assignee: Julian Hyde
>
> Druid 0.9.1.1
> Calcite 1.9.0
> I'm trying to calculate count per day.
> What I'm doing wrong ?
> {code}
> !connect
> jdbc:calcite:schemaFactory=org.apache.calcite.adapter.druid.DruidSchemaFactory
> admin admin
> 0: jdbc:calcite:schemaFactory=org.apache.calc> !describe "table"
> +-----------+-------------+------------+-------------+-----------+-----------+-------------+---------------+----------------+----------------+----------+---------+------------+---------------+------------------+
> | TABLE_CAT | TABLE_SCHEM | TABLE_NAME | COLUMN_NAME | DATA_TYPE | TYPE_NAME
> | COLUMN_SIZE | BUFFER_LENGTH | DECIMAL_DIGITS | NUM_PREC_RADIX | NULLABLE |
> REMARKS | COLUMN_DEF | SQL_DATA_TYPE | SQL_DATETIME_SUB |
> +-----------+-------------+------------+-------------+-----------+-----------+-------------+---------------+----------------+----------------+----------+---------+------------+---------------+------------------+
> | | adhoc | table | __time | -5 | BIGINT | -1
> | | null | 10 | 1 |
> | | | |
> |
> | | adhoc | table | count | -5 | BIGINT |
> -1 | | null | 10 | 1 |
> | | |
> 0: jdbc:calcite:schemaFactory=org.apache.calc> select sum("count") from
> "table" group by floor("__time" to DAY);
> 2016-09-27 21:50:26,770 [main] ERROR -
> org.apache.calcite.sql.validate.SqlValidatorException: Cannot apply 'FLOOR'
> to arguments of type 'FLOOR(<BIGINT>, <INTERVAL DAY>)'. Supported form(s):
> 'FLOOR(<NUMERIC>)'
> 'FLOOR(<DATETIME_INTERVAL>)'
> 'FLOOR(<DATE> TO <TIME_UNIT>)'
> 'FLOOR(<TIME> TO <TIME_UNIT>)'
> 'FLOOR(<TIMESTAMP> TO <TIME_UNIT>)'
> {code}
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