使用控制台提取数据

了解如何使用控制台查看和下载 Oracle NoSQL Database Cloud Service 表数据。

本文包含以下主题：

查看表数据

了解如何从 NoSQL 控制台查看 Oracle NoSQL Database Cloud Service 表中的数据。

要查看表数据，请执行以下操作：

从基础结构控制台访问 NoSQL 控制台。请参阅从基础结构控制台访问服务。
NoSQL 控制台会列出租户中的所有表。要查看表详细信息，请执行以下操作之一：
- 单击表名，或者
- 单击与表名对应的操作菜单，然后选择查看详细信息。
此时将打开“表详细信息”页。
在“表详细信息”页中，选择资源下的浏览数据选项卡。
默认情况下，查询文本会填充一个 SQL 查询，该查询将从表中检索所有记录。对于 Oracle NoSQL 语句，可以使用任何有效的 SQL 修改此查询。您可能会收到一个错误，指出您的语句不完整或有故障。请参阅在 OCI 控制台中调试 SQL 语句错误，了解 OCI 控制台中的可能错误以及如何修复它们。有关 SQL 查询示例，请参阅开发人员指南。
选择 Execute 。

表数据显示在“记录”部分中。
要查看已执行的 SQL 查询的查询执行计划，请选择显示查询执行计划。详细的查询执行计划将显示在新窗口中。

下载表数据

从基础结构控制台访问 NoSQL 控制台。请参阅从基础结构控制台访问服务。
NoSQL 控制台会列出租户中的所有表。要查看表详细信息，请执行以下操作之一：
- 单击表名，或者
- 单击与表名对应的操作菜单，然后选择查看详细信息。
此时将打开“表详细信息”页。
在“表详细信息”页中，选择资源下的浏览数据选项卡。
默认情况下，查询文本会填充一个 SQL 查询，该查询将从表中检索所有记录。对于 Oracle NoSQL 语句，可以使用任何有效的 SQL 修改此查询。您可能会收到一个错误，指出您的语句不完整或有故障。请参阅在 OCI 控制台中调试 SQL 语句错误，了解 OCI 控制台中的可能错误以及如何修复它们。有关 SQL 查询示例，请参阅开发人员指南。
单击要下载的行对应的操作菜单，然后选择下载 JSON 。

行以 JSON 格式下载。

使用 SQL 命令提取数据

可以使用 SQL SELECT 语句从 NoSQL 表中提取数据。

从表中提取所有行

可以从表中选择列。为此，请在语句的 SELECT 后列出所需表列的名称。在 FROM 子句之后给出表的名称。要从子表检索数据，请使用点表示法，例如 parent.child 。要选择所有表列，请使用星号 (*) 通配符。SELECT 语句还可以基于现有列的值包含计算表达式。

示例 1：从表 BaggageInfo 中选择所有数据。

SELECT * FROM BaggageInfo

解释：BaggageInfo 方案具有一些固定的静态字段和 JSON 列。静态字段包括票证号码、全名、性别、联系人电话和确认号码。包信息以 JSON 格式存储，并填充一组文档。

输出（仅为简洁起见显示结果的一行）：

{"ticketNo":1762330498104,"fullName":"Michelle Payne","gender":"F","contactPhone":"575-781-6240","confNo":"RL3J4Q",
"bagInfo":[{
   "bagArrivalDate":"2019-02-02T23:59:00Z",
   "flightLegs":[
      {"actions":[
           {"actionAt":"SFO","actionCode":"ONLOAD to IST","actionTime":"2019-02-02T12:10:00Z"},
           {"actionAt":"SFO","actionCode":"BagTag Scan at SFO","actionTime":"2019-02-02T11:47:00Z"},
           {"actionAt":"SFO","actionCode":"Checkin at SFO","actionTime":"2019-02-02T10:01:00Z"}],
           "estimatedArrival":"2019-02-03T01:00:00Z",
           "flightDate":"2019-02-02T12:00:00Z",
           "flightNo":"BM318",
           "fltRouteDest":"IST",
           "fltRouteSrc":"SFO"},
      {"actions":[
           {"actionAt":"IST","actionCode":"ONLOAD to ATH","actionTime":"2019-02-03T13:06:00Z"},
           {"actionAt":"IST","actionCode":"BagTag Scan at IST","actionTime":"2019-02-03T12:48:00Z"},
           {"actionAt":"IST","actionCode":"OFFLOAD from IST","actionTime":"2019-02-03T13:00:00Z"}],
           "estimatedArrival":"2019-02-03T12:12:00Z",
           "flightDate":"2019-02-02T13:10:00Z",
           "flightNo":"BM696",
           "fltRouteDest":"ATH",
           "fltRouteSrc":"IST"},
      {"actions":[
           {"actionAt":"JTR","actionCode":"Offload to Carousel at JTR","actionTime":"2019-02-03T00:06:00Z"},
           {"actionAt":"ATH","actionCode":"ONLOAD to JTR","actionTime":"2019-02-03T00:13:00Z"},
           {"actionAt":"ATH","actionCode":"OFFLOAD from ATH","actionTime":"2019-02-03T00:10:00Z"}],
           "estimatedArrival":"2019-02-03T00:12:00Z",
           "flightDate":"2019-2-2T12:10:00Z",
           "flightNo":"BM665",
           "fltRouteDest":"JTR",
           "fltRouteSrc":"ATH"}],
     "id":"79039899186259",
     "lastActionCode":"OFFLOAD",
     "lastActionDesc":"OFFLOAD",
     "lastSeenStation":"JTR",
     "lastSeenTimeGmt":"2019-02-02T23:59:00Z",
     "routing":"SFO/IST/ATH/JTR",
     "tagNum":"17657806247861"}
]}

示例 2：要从表 BaggageInfo 中选择特定列，请在 SELECT 语句中以逗号分隔列表的形式包含列名。

SELECT fullName, contactPhone, gender FROM BaggageInfo

解释：要显示三个静态字段的值 - 全名、电话号码和性别。

输出：

{"fullName":"Lucinda Beckman","contactPhone":"364-610-4444","gender":"M"}
{"fullName":"Adelaide Willard","contactPhone":"421-272-8082","gender":"M"}
{"fullName":"Raymond Griffin","contactPhone":"567-710-9972","gender":"F"}
{"fullName":"Elane Lemons","contactPhone":"600-918-8404","gender":"F"}
{"fullName":"Zina Christenson","contactPhone":"987-210-3029","gender":"M"}
{"fullName":"Zulema Martindale","contactPhone":"666-302-0028","gender":"F"}
{"fullName":"Dierdre Amador","contactPhone":"165-742-5715","gender":"M"}
{"fullName":"Henry Jenkins","contactPhone":"960-428-3843","gender":"F"}
{"fullName":"Rosalia Triplett","contactPhone":"368-769-5636","gender":"F"}
{"fullName":"Lorenzo Phil","contactPhone":"364-610-4444","gender":"M"}
{"fullName":"Gerard Greene","contactPhone":"395-837-3772","gender":"M"}
{"fullName":"Adam Phillips","contactPhone":"893-324-1064","gender":"M"}
{"fullName":"Doris Martin","contactPhone":"289-564-3497","gender":"F"}
{"fullName":"Joanne Diaz","contactPhone":"334-679-5105","gender":"F"}
{"fullName":"Omar Harvey","contactPhone":"978-191-8550","gender":"F"}
{"fullName":"Fallon Clements","contactPhone":"849-731-1334","gender":"M"}
{"fullName":"Lisbeth Wampler","contactPhone":"796-709-9501","gender":"M"}
{"fullName":"Teena Colley","contactPhone":"539-097-5220","gender":"M"}
{"fullName":"Michelle Payne","contactPhone":"575-781-6240","gender":"F"}
{"fullName":"Mary Watson","contactPhone":"131-183-0560","gender":"F"}
{"fullName":"Kendal Biddle","contactPhone":"619-956-8760","gender":"F"}

示例 3：从表 stream_acct 中选择所有数据。

SELECT * FROM stream_acct

解释：stream_acct 方案具有一些固定的静态字段和 JSON 列。

输出（仅为简洁起见显示结果的一行）：

{"acct_id":1,"profile_name":"AP","account_expiry":"2023-10-18T00:00:00.0Z",
"acct_data":{
[{
   "showName": "At the Ranch",
   "showId": 26,
   "showtype": "tvseries",
   "genres": ["action", "crime", "spanish"],
   "numSeasons": 4,
   "seriesInfo": [{
      "seasonNum": 1,
      "numEpisodes": 2,
      "episodes": [{
         "episodeID": 20,
         "episodeName": "Season 1 episode 1",
         "lengthMin": 85,
         "minWatched": 85,
         "date": "2022-04-18"
      },
      {
         "episodeID": 30,
         "lengthMin": 60,
         "episodeName": "Season 1 episode 2",
         "minWatched": 60,
         "date": "2022 - 04 - 18 "
      }]
   },
   {
      "seasonNum": 2,
      "numEpisodes": 2,
      "episodes": [{
         "episodeID": 40,
         "episodeName": "Season 2 episode 1",
         "lengthMin": 50,
         "minWatched": 50,
         "date": "2022-04-25"
      },
      {
         "episodeID": 50,
         "episodeName": "Season 2 episode 2",
         "lengthMin": 45,
         "minWatched": 30,
         "date": "2022-04-27"
      }]
   },
   {
      "seasonNum": 3,
      "numEpisodes": 2,
      "episodes": [{
         "episodeID": 60,
         "episodeName": "Season 3 episode 1",
         "lengthMin": 50,
         "minWatched": 50,
         "date": "2022-04-25"
      },
      {
         "episodeID": 70,
         "episodeName": "Season 3 episode 2",
         "lengthMin": 45,
         "minWatched": 30,
         "date": "2022 - 04 - 27 "
      }]
   }]
},
{
   "showName": "Bienvenu",
   "showId": 15,
   "showtype": "tvseries",
   "genres": ["comedy", "french"],
   "numSeasons": 2,
   "seriesInfo": [{
      "seasonNum": 1,
      "numEpisodes": 2,
      "episodes": [{
         "episodeID": 20,
         "episodeName": "Bonjour",
         "lengthMin": 45,
         "minWatched": 45,
         "date": "2022-03-07"
      },
      {
         "episodeID": 30,
         "episodeName": "Merci",
         "lengthMin": 42,
         "minWatched": 42,
         "date": "2022-03-08"
      }]
   }]
}]}}

筛选表中的数据

可以通过在 WHERE 子句中指定筛选条件来筛选查询结果。通常，过滤器条件由通过逻辑运算符 AND 或 OR 连接的一个或多个比较表达式组成。还支持以下比较运算符：=、！=、>、>=、< 和 <=。

示例 1：查找乘客行李的标签号以及给定预订编号 FH7G1W 的乘客全名。

SELECT bag.fullName, bag.bagInfo[].tagNum FROM BaggageInfo bag
WHERE bag.confNo="FH7G1W"

解释：提取与给定保留编号对应的标记编号。

输出：

{"fullName":"Rosalia Triplett","tagNum":"17657806215913"}

注意：为了更好地理解，下面显示了包含所有静态字段和 bagInfo JSON 的数据行。

   {
   "ticketNo": 1762344493810,
   "fullName": "Adam Phillips",
   "gender": "M",
   "contactPhone": "893-324-1064",
   "confNo": "LE6J4Z",
   "bags": [
     {
       "id": "79039899165297",
       "tagNum": "17657806255240",
       "routing": "MIA/LAX/MEL",
       "lastActionCode": "OFFLOAD",
       "lastActionDesc": "OFFLOAD",
       "lastSeenStation": "MEL",
       "flightLegs": [
         {
           "flightNo": "BM604",
           "flightDate": "2019-02-01T01:00:00",
           "fltRouteSrc": "MIA",
           "fltRouteDest": "LAX",
           "estimatedArrival": "2019-02-01T03:00:00",
           "actions": [
             {
               "actionAt": "MIA",
               "actionCode": "ONLOAD to LAX",
               "actionTime": "2019-02-01T01:13:00"
             },
             {
               "actionAt": "MIA",
               "actionCode": "BagTag Scan at MIA",
               "actionTime": "2019-02-01T00:47:00"
             },
             {
               "actionAt": "MIA",
               "actionCode": "Checkin at MIA",
               "actionTime": "2019-02-01T23:38:00"
             }
           ]
         },
         {
           "flightNo": "BM667",
           "flightDate": "2019-01-31T22:13:00",
           "fltRouteSrc": "LAX",
           "fltRouteDest": "MEL",
           "estimatedArrival": "2019-02-02T03:15:00",
           "actions": [
             {
               "actionAt": "MEL",
               "actionCode": "Offload to Carousel at MEL",
               "actionTime": "2019-02-02T03:15:00"
             },
             {
               "actionAt": "LAX",
               "actionCode": "ONLOAD to MEL",
               "actionTime": "2019-02-01T07:35:00"
             },
             {
               "actionAt": "LAX",
               "actionCode": "OFFLOAD from LAX",
               "actionTime": "2019-02-01T07:18:00"
             }
           ]
         }
       ],
       "lastSeenTimeGmt": "2019-02-02T03:13:00",
       "bagArrivalDate": "2019.02.02T03:13:00"
     }
   ]
  }

 {: .infoboxnote}

示例 2：上次看到具有给定预订编号 FH7G1W 的行李在哪里？此外，获取行李的标签号。

SELECT bag.fullName, bag.bagInfo[].tagNum,bag.bagInfo[].lastSeenStation
FROM BaggageInfo bag WHERE bag.confNo="FH7G1W"

解释：bagInfo 是 JSON，并且填充了文档数组。可以提取特定预订号码的全名和最后查看的车站。

输出：

{"fullName":"Rosalia Triplett","tagNum":"17657806215913",
"lastSeenStation":"VIE"}

示例 3：为票号为 1762340579411 的乘客选择行李（标记和上次查看时间）的详细信息。

SELECT bag.ticketNo, bag.fullName, bag.bagInfo[].tagNum,bag.bagInfo[].lastSeenStation
FROM BaggageInfo bag where bag.ticketNo=1762320369957

解释：bagInfo 是 JSON，并且填充了文档数组。可以提取特定票证编号的全名、标记编号和上次查看的站。

输出：

{"fullName":"Lorenzo Phil","tagNum":["17657806240001","17657806340001"],
"lastSeenStation":["JTR","JTR"]}

示例 4：获取姓氏、帐户到期日以及用户使用 acct_id 1 观看的节目。

SELECT account_expiry, acct.acct_data.lastName, acct.acct_data.contentStreamed[].showName FROM stream_acct acct WHERE acct_id=1

解释：acct_data 是 JSON，并且填充了文档数组。将提取特定帐户 ID 的姓氏、帐户到期日期和显示名称。

输出：

{"account_expiry":"2023-10-18T00:00:00.0Z","lastName":"Phillips","showName":["At the Ranch","Bienvenu"]}

使用控制台提取数据

查看表数据

下载表数据

使用 SQL 命令提取数据

相关主题