[
https://issues.apache.org/jira/browse/DRILL-6847?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16690732#comment-16690732
]
ASF GitHub Bot commented on DRILL-6847:
---------------------------------------
cgivre commented on issue #1539: DRILL-6847: Add Query Metadata to RESTful
Interface
URL: https://github.com/apache/drill/pull/1539#issuecomment-439655945
@arina-ielchiieva
I added the precision and scale.
The query:
```
SELECT CAST( employee_id AS DECIMAL) AS employee_id,
full_name,
first_name,
last_name,
CAST( position_id AS BIGINT) AS position_id, position_title
FROM cp.`employee.json` LIMIT 2
```
Will result in the following metadata in the RESTful interface:
```
{
"queryId": "240f59ad-9846-bee1-0668-575c00add18a",
"columns": [
"employee_id",
"full_name",
"first_name",
"last_name",
"position_id",
"position_title"
],
"metadata": {
"precision": [
38,
null,
null,
null,
null,
null
],
"scale": [
0,
null,
null,
null,
null,
null
],
"type": [
"VARDECIMAL",
"VARCHAR",
"VARCHAR",
"VARCHAR",
"BIGINT",
"VARCHAR"
]
},
"rows": [
{
"full_name": "Sheri Nowmer",
"employee_id": "1",
"last_name": "Nowmer",
"position_title": "President",
"first_name": "Sheri",
"position_id": "1"
},
{
"full_name": "Derrick Whelply",
"employee_id": "2",
"last_name": "Whelply",
"position_title": "VP Country Manager",
"first_name": "Derrick",
"position_id": "2"
}
]
}
```
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
> Add Query Metadata to RESTful Interface
> ---------------------------------------
>
> Key: DRILL-6847
> URL: https://issues.apache.org/jira/browse/DRILL-6847
> Project: Apache Drill
> Issue Type: Improvement
> Components: Metadata
> Reporter: Charles Givre
> Assignee: Charles Givre
> Priority: Minor
>
> The Drill RESTful interface does not return the structure of the query
> results. This makes integrating Drill with other BI tools difficult because
> they do not know what kind of data to expect.
> This PR adds a new section to the results called Metadata which contains a
> list of the minor types of all the columns returned.
> The query below will now return the following in the RESTful interface:
> {code:sql}
> SELECT CAST( employee_id AS INT) AS employee_id,
> full_name,
> first_name,
> last_name,
> CAST( position_id AS BIGINT) AS position_id,
> position_title
> FROM cp.`employee.json` LIMIT 2
> {code}
> {code}
> {
> "queryId": "2414bf3f-b4f4-d4df-825f-73dfb3a56681",
> "columns": [
> "employee_id",
> "full_name",
> "first_name",
> "last_name",
> "position_id",
> "position_title"
> ],
> "metadata": [
> "INT",
> "VARCHAR",
> "VARCHAR",
> "VARCHAR",
> "BIGINT",
> "VARCHAR"
> ],
> "rows": [
> {
> "full_name": "Sheri Nowmer",
> "employee_id": "1",
> "last_name": "Nowmer",
> "position_title": "President",
> "first_name": "Sheri",
> "position_id": "1"
> },
> {
> "full_name": "Derrick Whelply",
> "employee_id": "2",
> "last_name": "Whelply",
> "position_title": "VP Country Manager",
> "first_name": "Derrick",
> "position_id": "2"
> }
> ]
> }
> {code}
>
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
