【发布时间】：2016-09-02 07:43:31
【问题描述】：
我正在处理一个 JS 对象数组，其中包含执行 X 查询的结果。
每个查询结果都表示为一个嵌套的对象数组。
所述数组可能只包含一个成员（返回一行）或多个成员。每个成员/行可以由一个或多个字段/属性组成。
这是一个我已经 JSON.stringify-ed 的示例（请原谅我通过直接从控制台复制引入的一些转义字符）：
[
[
{
"current_queries_running": "0",
"timestamp": "2016-09-02 06:51:49",
"guid": "8d9470cc-669b-97a2-8fd6-7bab0d0c052e"
}
],
[
{
"lasthour_queries_spilled_to_disk_count": "0",
"timestamp": "2016-09-02 06:51:49",
"guid": "d15bd886-e72c-9879-d997-f2d48af4afa6\r\n"
}
],
[
{
"database_name": "tpchdslitev5",
"query_count": "56",
"query_text": "SELECT count(distinct query) LastHour_queries_spilled_to_disk_count FROM svl_que",
"min_execution_time": "0.00",
"max_execution_time": "16.00",
"average_execution_time": "0.55",
"total_execution_time": "31.00",
"max_query_id": 1958,
"last_run_date": "2016-09-01T16:00:00.000Z",
"aborted": 0,
"event": null,
"timestamp": "2016-09-02 06:51:49",
"guid": "038e8b57-aa5c-81dd-69d4-94d27b597f2f"
},
{
"database_name": "tpchdslitev5",
"query_\r\ncount": "51",
"query_text": "select trim(database) as database_name, count(query) as query_count, max(substri",
"min_executi\r\non_time": "0.00",
"max_execution_time": "10.00",
"average_execution_time": "0.29",
"total_execution_time": "15.00",
"max_query_i\r\nd": 1955,
"last_run_date": "2016-09-01T16:00:00.000Z",
"aborted": 0,
"event": null,
"timestamp": "2016-09-02 06:51:49",
"guid": "03\r\n8e8b57-aa5c-81dd-69d4-94d27b597f2f"
},
{
"database_name": "tpchdslitev5",
"query_count": "9",
"query_text": "select count(*) as\r\ncurrent_transaction_count from svv_transactions t WHERE t.loc",
"min_execution_time": "0.00",
"max_execution_time": "5.00",
"\r\naverage_execution_time": "1.00",
"total_execution_time": "9.00",
"max_query_id": 1598,
"last_run_date": "2016-09-01T16:00:00.00\r\n0Z",
"aborted": 0,
"event": null,
"timestamp": "2016-09-02 06:51:49",
"guid": "038e8b57-aa5c-81dd-69d4-94d27b597f2f"
},
{
"database\r\n_name": "tpchdslitev5",
"query_count": "9",
"query_text": "select case when count(*) > 0 then 1 else 0 end as current_is_vacu\r\num_in_process ",
"min_execution_time": "0.00",
"max_execution_time": "6.00",
"average_execution_time": "0.88",
"total_execution\r\n_time": "8.00",
"max_query_id": 1600,
"last_run_date": "2016-09-01T16:00:00.000Z",
"aborted": 0,
"event": null,
"timestamp": "2016-\r\n09-02 06:51:49",
"guid": "038e8b57-aa5c-81dd-69d4-94d27b597f2f"
},
{
"database_name": "tpchdslitev5",
"query_count": "9",
"query_\r\ntext": "select count(distinct l.query) as LastHour_perf_alert_count from stl_alert_event",
"min_execution_time": "0.00",
"ma\r\nx_execution_time": "4.00",
"average_execution_time": "0.77",
"total_execution_time": "7.00",
"max_query_id": 1602,
"last_run_dat\r\ne": "2016-09-01T16:00:00.000Z",
"aborted": 0,
"event": null,
"timestamp": "2016-09-02 06:51:49",
"guid": "038e8b57-aa5c-81dd-69d4\r\n-94d27b597f2f"
},
{
"database_name": "tpchdslitev5",
"query_count": "9",
"query_text": "select sum(total) as LastHour_internal_b\r\nroadcasting from (select count(query) to",
"min_execution_time": "0.00",
"max_execution_time": "4.00",
"average_execution_tim\r\ne": "0.66",
"total_execution_time": "6.00",
"max_query_id": 1601,
"last_run_date": "2016-09-01T16:00:00.000Z",
"aborted": 0,
"even\r\nt": null,
"timestamp": "2016-09-02 06:51:49",
"guid": "038e8b57-aa5c-81dd-69d4-94d27b597f2f"
},
{
"database_name": "tpchdslitev5",
"query_count": "9",
"query_text": "select count(*) as current_ungranted_locks_on_resources from svv_transactions t ",
"min_\r\nexecution_time": "0.00",
"max_execution_time": "4.00",
"average_execution_time": "0.55",
"total_execution_time": "5.00",
"max_qu\r\nery_id": 1599,
"last_run_date": "2016-09-01T16:00:00.000Z",
"aborted": 0,
"event": null,
"timestamp": "2016-09-02 06:51:49",
"guid\r\n": "038e8b57-aa5c-81dd-69d4-94d27b597f2f"
},
{
"database_name": "tpchdslitev5",
"query_count": "9",
"query_text": "select avg(dat\r\nediff(ms, starttime, endtime)) as lastHour_QueryExecutionTime_sec ",
"min_execution_time": "0.00",
"max_execution_time": "5.\r\n00",
"average_execution_time": "0.55",
"total_execution_time": "5.00",
"max_query_id": 1595,
"last_run_date": "2016-09-01T16:00:\r\n00.000Z",
"aborted": 0,
"event": null,
"timestamp": "2016-09-02 06:51:49",
"guid": "038e8b57-aa5c-81dd-69d4-94d27b597f2f"
},
{
"dat\r\nabase_name": "tpchdslitev5",
"query_count": "9",
"query_text": "SELECT SUM(w.total_queue_time) / 1000000.0 as LastHour_WLM_Qu\r\neueTime FROM stl_wl",
"min_execution_time": "0.00",
"max_execution_time": "3.00",
"average_execution_time": "0.44",
"total_exec\r\nution_time": "4.00",
"max_query_id": 1597,
"last_run_date": "2016-09-01T16:00:00.000Z",
"aborted": 0,
"event": null,
"timestamp": "\r\n2016-09-02 06:51:49",
"guid": "038e8b57-aa5c-81dd-69d4-94d27b597f2f"
},
{
"database_name": "tpchdslitev5",
"query_count": "9",
"q\r\nuery_text": "select avg(datediff(ms, starttime, endtime)) as lastHour_UserQueryExecutionTime_",
"min_execution_time": "0.00\r\n",
"max_execution_time": "2.00",
"average_execution_time": "0.22",
"total_execution_time": "2.00",
"max_query_id": 1596,
"last_ru\r\nn_date": "2016-09-01T16:00:00.000Z",
"aborted": 0,
"event": null,
"timestamp": "2016-09-02 06:51:49",
"guid": "038e8b57-aa5c-81dd\r\n-69d4-94d27b597f2f"
},
{
"database_name": "tpchdslitev5",
"query_count": "56",
"query_text": "select count(*) as current_Queries\r\n_Running from stv_recents where status = 'Runn",
"min_execution_time": "0.00",
"max_execution_time": "1.00",
"average_executi\r\non_time": "0.01",
"total_execution_time": "1.00",
"max_query_id": 1956,
"last_run_date": "2016-09-01T16:00:00.000Z",
"aborted": 0,
"event": null,
"timestamp": "2016-09-02 06:51:49",
"guid": "038e8b57-aa5c-81dd-69d4-94d27b597f2f"
}
]
]
在上面的示例中，我正在处理 3 个结果集。前两个结果集包含一行作为有效负载，最后一个包含 11。
我需要将每一行解构为一个（或多个）键/值对，并用相关的时间戳和 GUID 进行修饰。对于前两个结果集，事情是直截了当的，因为我有一个记录和一个键/值对可以使用。
我需要处理形状未知的结果集这一事实使事情变得更加困难。在第三个结果集中，我需要将 11 行中的每一行分成 11 个键/值对（11 行，每行 11 个字段，不包括 guid 和时间戳）
这似乎是对 for 和/或 for for..in 的一个非常直接的练习，但我在提取属性键和属性值时遇到了问题。
myObject.length
返回 3。当然。
myObject[0].length
值 = 1... 对。
myObject[2][3].query_count
值 = 9.... 还是不错的。但我不会提前知道钥匙。在我遍历我的 X（在本例中为三个）结果集对象并进入每个包含的 y-z（1 到 11）行之后，我如何实际检索代表我的“列名”和“列”的键和值价值观”？
我一直盯着这个看太久了，我的大脑不再合作。我知道当有人将我推向正确的方向时，答案将是显而易见的，但我需要这种推动。
提前致谢！
【问题讨论】：
-
太多令人困惑的信息。你想用这个对象数组做什么？
-
您能否发布您已经尝试过的代码以及任何错误？
-
尝试将您的问题分解成更多的小块。这是完全无法理解的。您的问题是遍历数组的元素，然后在对象属性中，并构建一个新数组吗？
-
请添加想要的结果结构。用 guid 和时间戳装饰是什么意思？
标签： javascript arrays javascript-objects