小编mar*_*ake的帖子

我有以下代码。

async function bulkInsert(db, collectionName, documents) {
  try {
    const cosmosResults = await db.collection(collectionName).insertMany(documents);
    console.log(cosmosResults);
    return cosmosResults
  } catch (e) {
    console.log(e)
  }

}

如果我使用大量文档来运行它，我会得到（并非意外）

{ MongoError: Message: {"Errors":["Request rate is large"]}
  ActivityId: b3c83c38-0000-0000-0000-000000000000, 
  Request URI: /apps/DocDbApp/services/DocDbServer24/partitions/a4cb4964-38c8-11e6-8106-8cdcd42c33be/replicas/1p/, 
  RequestStats: , SDK: Microsoft.Azure.Documents.Common/1.19.102.5
    at G:\Node-8\NodeExample\node_modules\oracle-movie-ticket-demo\node_modules\mongodb-core\lib\connection\pool.js:596:61
at authenticateStragglers (G:\Node-8\NodeExample\node_modules\oracle-movie-ticket-demo\node_modules\mongodb-core\lib\connection\pool.js:514:16)
at Connection.messageHandler (G:\Node-8\NodeExample\node_modules\oracle-movie-ticket-demo\node_modules\mongodb-core\lib\connection\pool.js:550:5)
at emitMessageHandler (G:\Node-8\NodeExample\node_modules\oracle-movie-ticket-demo\node_modules\mongodb-core\lib\connection\connection.js:309:10)
at TLSSocket.<anonymous> (G:\Node-8\NodeExample\node_modules\oracle-movie-ticket-demo\node_modules\mongodb-core\lib\connection\connection.js:452:17)
at emitOne (events.js:116:13)
at TLSSocket.emit (events.js:211:7)
at addChunk (_stream_readable.js:263:12)
at readableAddChunk (_stream_readable.js:250:11)
at TLSSocket.Readable.push (_stream_readable.js:208:10)
name: 'MongoError',
message: 'Message: {"Errors":["Request rate is large"]}\r\nActivityId: b3c83c38-0000-0000-0000-000000000000, 
Request …

如果我有以下json文件

C:\PostgresStage>type test2.json
{"key":"Hello \"World\""}

我尝试使用 COPY 命令将它加载到 json 或 text 列中我最终得到了无效的 JSON 因为复制似乎从文件中去除了转义字符，如下所示

postgres=# \d+ T1
                               Table "public.t1"
Column | Type | Collation | Nullable | Default | Storage  | Stats target | Description
--------+------+-----------+----------+---------+----------+--------------+-------------
 data   | text |           |          |         | extended |              |


postgres=# delete from T1;
DELETE 1
postgres=# copy t1 from 'c:\PostgresStage\test2.json';
COPY 1
postgres=# select  * from T1;
          data
-------------------------
 {"key":"Hello "World""}
 (1 row)


postgres=# select data::jsonb from T1;
ERROR:  invalid input syntax for …