I see where you are going with this now.... Not sure if you might be bumping into this bug: https://issues.apache.org/jira/browse/HIVE-1575
since this line LATERAL VIEW json_tuple(tr2.extended_entities, 'media') tr3 as media pulls the JSON array as a "top-level" object... does this not work? LATERAL VIEW json_tuple(tr1.text_col, 'id', 'extended_entities', 'possibly_sensitive', 'extended_entities.media') tr2 as id, extended_entities, possibly_sensitive, media From: Sam Joe [mailto:games2013....@gmail.com] Sent: Tuesday, October 27, 2015 2:25 PM To: user@hive.apache.org Subject: Re: Using json_tuple for Nested json Arrays Hi Ryan, The simple query is running fine as shown below: hive> SELECT tr2.id<http://tr2.id>, tr2.possibly_sensitive > FROM tweets_raw tr1 > LATERAL VIEW json_tuple(tr1.text_col, 'id', 'extended_entities', 'possibly_sensitive') tr2 as id, extended_entities, possibly_sensitive > where tr2.id<http://tr2.id>='654395184428515332' > LIMIT 1; OK 654395184428515332 false Time taken: 1.813 seconds, Fetched: 1 row(s) hive> However, if I try to get any data from the json array it's failing. Thanks, Joel On Tue, Oct 27, 2015 at 4:21 PM, Ryan Harris <ryan.har...@zionsbancorp.com<mailto:ryan.har...@zionsbancorp.com>> wrote: looking at your sample data, you shouldn't need to use lateral view explode unless you are trying to get 1 entry per row for your media sizes (thumb, small, large, medium, etc) ... Try starting with something simple like : SELECT get_json_object(text_col, '$.id') as id FROM tweets_raw limit 10; You should also be able to use json_tuple(), but start simple.... From: Sam Joe [mailto:games2013....@gmail.com<mailto:games2013....@gmail.com>] Sent: Tuesday, October 27, 2015 1:43 PM To: user@hive.apache.org<mailto:user@hive.apache.org> Subject: Re: Using json_tuple for Nested json Arrays Hi Ryan, Thanks for your reply! I didn't try using get_json_object() UDF. I will try using that and let you know the results. I tried using the following script which failed : SELECT tr2.id<http://tr2.id>, tr2.possibly_sensitive, tr3.media, media_object.source_user_id FROM tweets_raw tr1 LATERAL VIEW json_tuple(tr1.text_col, 'id', 'extended_entities', 'possibly_sensitive') tr2 as id, extended_entities, possibly_sensitive LATERAL VIEW json_tuple(tr2.extended_entities, 'media') tr3 as media LATERAL VIEW EXPLODE(tr3.media) media_exploded as media_object where tr2.id<http://tr2.id>='654395184428515332' LIMIT 1; FAILED: UDFArgumentException explode() takes an array or a map as a parameter Thanks, Joel On Tue, Oct 27, 2015 at 3:37 PM, Ryan Harris <ryan.har...@zionsbancorp.com<mailto:ryan.har...@zionsbancorp.com>> wrote: Do you have an example of the query that you tried (which failed). In short, you probably want to use the get_json_object() UDF: https://cwiki.apache.org/confluence/display/Hive/LanguageManual+UDF#LanguageManualUDF-get_json_object if you need the JSON array broken into individual records, you might require lateral view explode as in these examples: http://mechanics.flite.com/blog/2014/04/16/using-explode-and-lateral-view-in-hive/ http://stackoverflow.com/questions/28716165/how-to-query-struct-array-with-hive-get-json-object From: Sam Joe [mailto:games2013....@gmail.com<mailto:games2013....@gmail.com>] Sent: Tuesday, October 27, 2015 1:29 PM To: user@hive.apache.org<mailto:user@hive.apache.org> Subject: Re: Using json_tuple for Nested json Arrays I tried using EXPLODE function on the nested json array but it doesn't work and throws following error: FAILED: UDFArgumentException explode() takes an array or a map as a parameter Thanks, Joel On Tue, Oct 27, 2015 at 3:20 PM, Sam Joe <games2013....@gmail.com<mailto:games2013....@gmail.com>> wrote: Hi, Is it possible to use json_tuple function to extract data from json arrays (nested too). I am trying to process json data as string and avoid using serdes since user data may be malformed. Please see a sample json data given below: { "filter_level": "low", "retweeted": false, "in_reply_to_screen_name": null, "possibly_sensitive": false, "truncated": false, "lang": "en", "in_reply_to_status_id_str": null, "id": 654395184428515332, "extended_entities": { "media": [{ "sizes": { "thumb": { "w": 150, "resize": "crop", "h": 150 }, "small": { "w": 340, "resize": "fit", "h": 255 }, "large": { "w": 1024, "resize": "fit", "h": 768 }, "medium": { "w": 600, "resize": "fit", "h": 450 } }, "source_user_id": 16864598, "media_url": "http://pbs.twimg.com/media/CRSL2MPWsAAOnZo.jpg", "display_url": "pic.twitter.com/i3004WyF4g<http://pic.twitter.com/i3004WyF4g>", "type": "photo", "url": "http://t.co/i3004WyF4g", "id": 654301608990388224, "media_url_https": "https://pbs.twimg.com/media/CRSL2MPWsAAOnZo.jpg", "expanded_url": "http://twitter.com/lordlancaster/status/654301626665189376/photo/1", "source_user_id_str": "16864598", "indices": [143, 144], "source_status_id_str": "654301626665189376", "source_status_id": 654301626665189376, "id_str": "654301608990388224" }, { "sizes": { "thumb": { "w": 150, "resize": "crop", "h": 150 }, "small": { "w": 340, "resize": "fit", "h": 255 }, "large": { "w": 1024, "resize": "fit", "h": 768 }, "medium": { "w": 600, "resize": "fit", "h": 450 } }, "source_user_id": 16864598, "media_url": "http://pbs.twimg.com/media/CRSL2MRWgAAGOcj.jpg", "display_url": "pic.twitter.com/i3004WyF4g<http://pic.twitter.com/i3004WyF4g>", "type": "photo", "url": "http://t.co/i3004WyF4g", "id": 654301608998764544, "media_url_https": "https://pbs.twimg.com/media/CRSL2MRWgAAGOcj.jpg", "expanded_url": "http://twitter.com/lordlancaster/status/654301626665189376/photo/1", "source_user_id_str": "16864598", "indices": [143, 144], "source_status_id_str": "654301626665189376", "source_status_id": 654301626665189376, "id_str": "654301608998764544" }, { "sizes": { "thumb": { "w": 150, "resize": "crop", "h": 150 }, "small": { "w": 340, "resize": "fit", "h": 255 }, "large": { "w": 1024, "resize": "fit", "h": 768 }, "medium": { "w": 600, "resize": "fit", "h": 450 } }, "source_user_id": 16864598, "media_url": "http://pbs.twimg.com/media/CRSL2MQWwAAP4Qo.jpg", "display_url": "pic.twitter.com/i3004WyF4g<http://pic.twitter.com/i3004WyF4g>", "type": "photo", "url": "http://t.co/i3004WyF4g", "id": 654301608994586624, "media_url_https": "https://pbs.twimg.com/media/CRSL2MQWwAAP4Qo.jpg", "expanded_url": "http://twitter.com/lordlancaster/status/654301626665189376/photo/1", "source_user_id_str": "16864598", "indices": [143, 144], "source_status_id_str": "654301626665189376", "source_status_id": 654301626665189376, "id_str": "654301608994586624" }, { "sizes": { "thumb": { "w": 150, "resize": "crop", "h": 150 }, "small": { "w": 340, "resize": "fit", "h": 255 }, "large": { "w": 1024, "resize": "fit", "h": 768 }, "medium": { "w": 600, "resize": "fit", "h": 450 } }, "source_user_id": 16864598, "media_url": "http://pbs.twimg.com/media/CRSL2M8WcAEXowZ.jpg", "display_url": "pic.twitter.com/i3004WyF4g<http://pic.twitter.com/i3004WyF4g>", "type": "photo", "url": "http://t.co/i3004WyF4g", "id": 654301609179115521, "media_url_https": "https://pbs.twimg.com/media/CRSL2M8WcAEXowZ.jpg", "expanded_url": "http://twitter.com/lordlancaster/status/654301626665189376/photo/1", "source_user_id_str": "16864598", "indices": [143, 144], "source_status_id_str": "654301626665189376", "source_status_id": 654301626665189376, "id_str": "654301609179115521" }] } } Appreciate any help! Thanks, Joel ________________________________ THIS ELECTRONIC MESSAGE, INCLUDING ANY ACCOMPANYING DOCUMENTS, IS CONFIDENTIAL and may contain information that is privileged and exempt from disclosure under applicable law. If you are neither the intended recipient nor responsible for delivering the message to the intended recipient, please note that any dissemination, distribution, copying or the taking of any action in reliance upon the message is strictly prohibited. If you have received this communication in error, please notify the sender immediately. Thank you. ________________________________ THIS ELECTRONIC MESSAGE, INCLUDING ANY ACCOMPANYING DOCUMENTS, IS CONFIDENTIAL and may contain information that is privileged and exempt from disclosure under applicable law. If you are neither the intended recipient nor responsible for delivering the message to the intended recipient, please note that any dissemination, distribution, copying or the taking of any action in reliance upon the message is strictly prohibited. If you have received this communication in error, please notify the sender immediately. Thank you. ====================================================================== THIS ELECTRONIC MESSAGE, INCLUDING ANY ACCOMPANYING DOCUMENTS, IS CONFIDENTIAL and may contain information that is privileged and exempt from disclosure under applicable law. If you are neither the intended recipient nor responsible for delivering the message to the intended recipient, please note that any dissemination, distribution, copying or the taking of any action in reliance upon the message is strictly prohibited. If you have received this communication in error, please notify the sender immediately. Thank you.