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Posted to issues@calcite.apache.org by "Julian Hyde (JIRA)" <ji...@apache.org> on 2016/09/27 23:21:21 UTC
[jira] [Commented] (CALCITE-1392) Unable to specify time
granularity for Druid
[ https://issues.apache.org/jira/browse/CALCITE-1392?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15527753#comment-15527753 ]
Julian Hyde commented on CALCITE-1392:
--------------------------------------
Did you tell Calcite that "__time" is the timestamp column? If you did, then its type should be TIMESTAMP and FLOOR should work. If you didn't, its type will be VARCHAR.
> 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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