我有一个带有许多json对象的json文件，比如这个
{
"created_time": "2015-04-15T15:12:43+0000",
"updated_time": "2015-04-15T15:12:43+0000",
"comments": {
"data": [
{
"created_time": "2015-04-15T18:09:06+0000",
"can_remove": false,
"like_count": 4,
"user_likes": false,
"from": {
"name": "Ana Paula Mandlaze Gomez",
"id": "1413157615397359"
},
"id": "981539778532568_981613971858482",
"message": "\"Many people, especially ignorant people, want to punish you for speaking the truth, for being correct, for being you. Never apologize for being correct, or for being years ahead of your time. If you' re right and you know it, speak your mind. Even if you are a minority of one, the truth is still the truth.\"Gandhi"
},
{
"created_time": "2015-04-15T16:33:27+0000",
"can_remove": false,
"like_count": 2,
"user_likes": false,
"from": {
"name": "Ana Paula Mandlaze Gomez",
"id": "1413157615397359"
},
"id": "981539778532568_981574091862470",
"message": "I love I love GHANDI"
},
{
"created_time": "2015-04-22T19:47:59+0000",
"can_remove": false,
"like_count": 0,
"user_likes": false,
"from": {
"name": "Fardous Alhorafi",
"id": "1800049323548924"
},
"id": "981539778532568_985418828144663",
"message": "كان عبقري"
},
{
"created_time": "2015-04-15T21:06:35+0000",
"can_remove": false,
"like_count": 0,
"user_likes": false,
"from": {
"name": "Jamal Abdulrahman",
"id": "1366198393416315"
},
"id": "981539778532568_981681661851713",
"message": "This great leader"
},
{
"created_time": "2015-04-15T15:35:42+0000",
"can_remove": false,
"like_count": 0,
"user_likes": false,
"from": {
"name": "Sergio Pellicciotta",
"id": "1307515282677785"
},
"id": "981539778532568_981548471865032",
"message": "ci vuole la pazienza"
},
{
"created_time": "2015-04-15T16:31:44+0000",
"can_remove": false,
"like_count": 0,
"user_likes": false,
"from": {
"name": "Merve Tacirli",
"id": "773109599535260"
},
"id": "981539778532568_981573545195858",
"message": "Key word: patient"
},
{
"created_time": "2015-08-15T21:36:38+0000",
"can_remove": false,
"like_count": 0,
"user_likes": false,
"from": {
"name": "Tu Abuela",
"id": "10212662776625548"
},
"id": "981539778532568_1046913331995212",
"message": ":)"
},
{
"created_time": "2015-04-15T19:38:53+0000",
"can_remove": false,
"like_count": 0,
"user_likes": false,
"from": {
"name": "Vikash Tiwari",
"id": "977320485738496"
},
"id": "981539778532568_981645241855355",
"message": "sadar naman bapu"
},
{
"created_time": "2015-04-15T15:29:21+0000",
"can_remove": false,
"like_count": 0,
"user_likes": false,
"from": {
"name": "Nikunj Patel",
"id": "1370944359688528"
},
"id": "981539778532568_981545948531951",
"message": "Aaapko khiladi ka salaaM"
},
{
"created_time": "2015-04-16T06:01:33+0000",
"can_remove": false,
"like_count": 0,
"user_likes": false,
"from": {
"name": "Satya Prakash",
"id": "791386747691183"
},
"id": "981539778532568_981861258500420",
"message": "......patience es depth of laef.."
},
{
"created_time": "2015-04-27T20:46:37+0000",
"can_remove": false,
"like_count": 0,
"user_likes": false,
"from": {
"name": "Javier Arce",
"id": "1353955594657881"
},
"id": "981539778532568_988593714493841",
"message": "COMIC - THE DAY GANDHI DIE - COMIC https://www.youtube.com/watch?v=_g7KpUx0qSQ"
},
{
"created_time": "2015-04-15T15:28:59+0000",
"can_remove": false,
"like_count": 0,
"user_likes": false,
"from": {
"name": "Nikunj Patel",
"id": "1370944359688528"
},
"id": "981539778532568_981545825198630",
"message": "Bhai"
}
],
"paging": {"cursors": {
"before": "MTYZD",
"after": "MQZDZD"
}}
},
"status_type": "added_photos",
"link": "https://www.facebook.com/FatherofNation/photos/a.279218472098039.73934.173835512636336/981539778532568/?type=3",
"icon": "https://www.facebook.com/images/icons/photo.gif",
"is_hidden": false,
"privacy": {
"allow": "",
"deny": "",
"description": "",
"value": "",
"friends": ""
},
"message": "You cannot achieve durable reform by becoming impatient. - Mahatma Gandhi",
"type": "photo",
"object_id": "981539778532568",
"picture": "https://fb-s-c-a.akamaihd.net/h-ak-fbx/v/t1.0-0/s130x130/10300287_981539778532568_5512778811597106826_n.jpg?oh=900c8f181224cef2b2b93688a0ef9d88&oe=599C0E7D&__gda__=1508137453_7f9508a338248a38665e21299f8410bb",
"shares": {"count": 140},
"is_expired": false,
"name": "Timeline Photos",
"from": {
"name": "Mahatma Gandhi",
"id": "173835512636336",
"category": "Public Figure"
},
"id": "173835512636336_981539778532568",
"likes": {
"data": [
{
"name": "Rai Santi",
"id": "699214820279365"
},
{
"name": "Rabari Bhavesh Bhandu",
"id": "197158197474003"
},
{
"name": "Cristiano Hussaini",
"id": "469179660091433"
},
{
"name": "D Pák Ský",
"id": "342182466199173"
},
{
"name": "Joseph Muendo",
"id": "893394437480382"
},
{
"name": "Kati Vali",
"id": "10209489431495182"
},
{
"name": "Neelam Gupta",
"id": "278625325934685"
},
{
"name": "Rahul Patel",
"id": "298644327257948"
},
{
"name": "Niti Jani",
"id": "1520081698036960"
},
{
"name": "Sara Maria Crespo Echeandía",
"id": "10155452589526055"
},
{
"name": "Sonia Quintana Castillo",
"id": "485471615125223"
},
{
"name": "Tello Maweng",
"id": "720777431451520"
},
{
"name": "David Figueroa",
"id": "1886084661665963"
},
{
"name": "Aphle Grace Celestre Devera",
"id": "1517425511643699"
},
{
"name": "Angel Legaspi Alquizar",
"id": "327218104364636"
},
{
"name": "Sanjeev Mishra",
"id": "1207468336065542"
},
{
"name": "Patricia Fastinger",
"id": "1956586287688483"
},
{
"name": "Bojana Simonovska",
"id": "10155588604414614"
},
{
"name": "Nath Schmidt",
"id": "1337540319645871"
},
{
"name": "Santoshi Nallanchakravartula",
"id": "1364678026914798"
},
{
"name": "Pabitra Kumar",
"id": "631689807038744"
},
{
"name": "Thaís Araujo",
"id": "1350769495004631"
},
{
"name": "Dilip Singh Rathore",
"id": "1711441295817067"
},
{
"name": "Kamlesh Saini",
"id": "1987451464817042"
},
{
"name": "SaDhu Ka",
"id": "1490063764348943"
}
],
"paging": {
"next": "https://graph.facebook.com/v2.3/173835512636336_981539778532568/likes?access_token=166536670200421%7Cb8948bb3c57f35a94afee5d5869854b7&limit=25&after=MTQ5MDA2Mzc2NDM0ODk0MwZDZD",
"cursors": {
"before": "Njk5MjE0ODIwMjc5MzY1",
"after": "MTQ5MDA2Mzc2NDM0ODk0MwZDZD"
}
}
}}
我想使用apache drill进行SQL查询以访问嵌套对象，例如comments.data [0] .message。我尝试了所有的东西，并按照官方指南查询复杂的JSON数据但是没有用。
选择comments.data [0] .message FROM dfs。
/home/dhaker/Desktop/GhandiOffcialPage/Facebookposts.json
这是来自jdbc的错误：
验证错误：从第1行第8列到第1行第15列：表＆＃39;评论＆＃39;找不到
SQL Query null
[错误ID：dhaker-X550V上的c50f3051-79f8-4f35-b9bd-fd51c06ecb61：31010] []
答案 0 :(得分：1)
我必须为路径添加别名，然后像这样调用：
选择posts.comments.data [0] .message FROM dfs./home/dhaker/Desktop/GhandiOffcialPage/Facebookposts.json posts;
它的效果很好。