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https://issues.apache.org/jira/browse/DRILL-1558?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Abhishek Girish updated DRILL-1558:
-----------------------------------
Summary: Count(<NestedDataInColumn>) does not work on JSON (and
JSON-converted-Parquet) (was: Count(<ArrayColumn>) does not work on JSON (and
JSON-converted-Parquet))
> Count(<NestedDataInColumn>) does not work on JSON (and JSON-converted-Parquet)
> ------------------------------------------------------------------------------
>
> Key: DRILL-1558
> URL: https://issues.apache.org/jira/browse/DRILL-1558
> Project: Apache Drill
> Issue Type: Bug
> Components: Metadata
> Reporter: Abhishek Girish
> Assignee: Jason Altekruse
>
> Works:
> > select count(`type`) from yelp_academic_dataset_review;
> +------------+
> | EXPR$0 |
> +------------+
> | 1125458 |
> +------------+
> 1 row selected (0.065 seconds)
> Fails:
> I. Without specifying index
> > select count(`votes`) from yelp_academic_dataset_review;
> +------------+
> | EXPR$0 |
> +------------+
> | 0 |
> +------------+
> > select count(`votes`) from `yelp_academic_dataset_review.json`;
> Query failed: Screen received stop request sent. Failure while materializing
> expression.
> Error in expression at index -1. Error: Missing function implementation:
> [count(MAP-REQUIRED)]. Full expression: --UNKNOWN EXPRESSION.
> [e4cdd655-cc87-4803-9b25-555779161ec6]
> Error: exception while executing query: Failure while trying to get next
> result batch. (state=,code=0)
> 0: jdbc:drill:zk=10.10.103.34:5181> select count(`text`) from
> `yelp_academic_dataset_review.json`;
> II. Specifying Index - Format: JSON
> > select count(`votes[0]`) from `yelp_academic_dataset_review.json`;
> +------------+
> | EXPR$0 |
> +------------+
> | 0 |
> +------------+
> 1 row selected (116.563 seconds)
> > select count(`votes[1]`) from `yelp_academic_dataset_review.json`;
> +------------+
> | EXPR$0 |
> +------------+
> | 0 |
> +------------+
> 1 row selected (138.264 seconds)
> III. Specifying Index - Format: Parquet converted from JSON
> > select count(`votes[0]`) from yelp_academic_dataset_review;
> +------------+
> | EXPR$0 |
> +------------+
> | 0 |
> +------------+
> 1 row selected (0.118 seconds)
> > select count(`votes[1]`) from yelp_academic_dataset_review;
> +------------+
> | EXPR$0 |
> +------------+
> | 0 |
> +------------+
> 1 row selected (0.061 seconds)
> Sample data:
> +------------+------------+------------+------------+------------+------------+------------+-------------+
> | votes | user_id | review_id | stars | date | text
> | type | business_id |
> +------------+------------+------------+------------+------------+------------+------------+-------------+
> | {"funny":0,"useful":0,"cool":0} | 3MSa_fdxgsaY9yF9vqmeUg |
> ag1fnnEmc2yernTW2ur2eg | 5 | 2010-09-07 | Great food and service |
> review | KPoTixdjoJxSqRSEApSAGg |
> | {"funny":0,"useful":0,"cool":0} | f3LA83yEEBMj9q92H28O7w |
> LNW2d7TDLB7XHT-V8k-6Jg | 4 | 2010-09-08 | I haven't been in a while
> but I remember being impressed. Nice amb |
> | {"funny":0,"useful":0,"cool":0} | SaC2fZjZZfWV-8wYb6o6fw |
> 449K7FhWs5Hn1xB1Qv8KPw | 4 | 2010-09-18 | Finally got to eat at this
> place after driving by so many times. I |
> | {"funny":0,"useful":0,"cool":0} | Sg9eHImUp1DMYhY7gA2img |
> yjEOpYaOnahtzCHBzY6KUg | 3 | 2010-09-27 | It was fine. A fine thai
> meal to have before a rock show downtown. |
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