Chun Chang created DRILL-1964: --------------------------------- Summary: 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: Storage - JSON Affects Versions: 0.8.0 Reporter: Chun Chang Assignee: Hanifi Gunes Priority: Minor
#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. -- This message was sent by Atlassian JIRA (v6.3.4#6332)