[jira] [Updated] (DRILL-1964) Missing key elements in returned array of maps

["Hanifi Gunes (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/DRILL-1964?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hanifi Gunes updated DRILL-1964:
--------------------------------
    Component/s:     (was: Storage - JSON)
                 Execution - Data Types

> Missing key elements in returned array of maps
> ----------------------------------------------
>
>                 Key: DRILL-1964
>                 URL: https://issues.apache.org/jira/browse/DRILL-1964
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Execution - Data Types
>    Affects Versions: 0.8.0
>            Reporter: Chun Chang
>            Assignee: Hanifi Gunes
>            Priority: Minor
>             Fix For: 0.9.0
>
>
> #Wed Jan 07 18:54:07 EST 2015
> git.commit.id.abbrev=35a350f
> For an array of maps, if the schema for each map is not identical, with today's implementation, we suppose to display each map with all elements (keys) from all maps. This is not happening. For example, I have the following data:
> {code}
> {
>     "id": 2,
>     "oooa": {
>         "oa": {
>             "oab": {
>                 "oabc": [
>                     {
>                         "rowId": 2
>                     },
>                     {
>                         "rowValue1": [{"rv1":1, "rv2":2}, {"rva1":3, "rva2":4}],
>                         "rowValue2": [{"rw1":1, "rw2":2}, {"rwa1":3, "rwa2":4}]
>                     }
>                 ]
>             }
>         }
>     }
> }
> {code}
> The following query gives:
> {code}
> 0: jdbc:drill:schema=dfs.drillTestDirComplexJ> select t.oooa.oa.oab.oabc from `jira2file/jira1.json` t;
> +------------+
> |   EXPR$0   |
> +------------+
> | [{"rowId":2,"rowValue1":[],"rowValue2":[]},{"rowValue1":[{"rv1":1,"rv2":2},{"rva1":3,"rva2":4}],"rowValue2":[{"rw1":1,"rw2":2},{"rwa1":3,"rwa2":4}]}] |
> +------------+
> {code}
> The returned result in a nicely formatted json form:
> {code}
> [
>     {
>         "rowId": 2,
>         "rowValue1": [],
>         "rowValue2": []
>     },
>     {
>         "rowValue1": [
>             {
>                 "rv1": 1,
>                 "rv2": 2
>             },
>             {
>                 "rva1": 3,
>                 "rva2": 4
>             }
>         ],
>         "rowValue2": [
>             {
>                 "rw1": 1,
>                 "rw2": 2
>             },
>             {
>                 "rwa1": 3,
>                 "rwa2": 4
>             }
>         ]
>     }
> ]
> {code}
> Notice the first map includes all keys from all maps. But the second map is missing the "rowId" key.



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