Question

Imports System.Data.SqlClient

Module Module1

Sub Main()
    Dim connectionString1 = "YOUR FIRST CONNECTIONSTRING HERE"
    Dim connectionString2 = "YOUR SECOND CONNECTIONSTRING HERE"

    Using connection1 = New SqlConnection(connectionString1)
        connection1.Open()

        Using command = connection1.CreateCommand()
            command.CommandText = "CREATE TABLE #T (Name VARCHAR(64))"
            command.ExecuteNonQuery()
        End Using

        Using connection2 = New SqlConnection(connectionString2)
            connection2.Open()

            Using command = connection2.CreateCommand()
                command.CommandText = "SELECT Name FROM Table2"
                Using reader = command.ExecuteReader()

                    Using bulkCopy = New SqlBulkCopy(connection1)
                        bulkCopy.DestinationTableName = "#T"
                        bulkCopy.BatchSize = 10000
                        bulkCopy.ColumnMappings.Add(0, "Name")
                        bulkCopy.WriteToServer(reader)
                    End Using
                End Using
            End Using
        End Using

        Using command = connection1.CreateCommand()
            command.CommandText = "SELECT Table1.Name FROM Table1 INNER JOIN #T ON Table1.Name = #T.Name"

            Using reader = command.ExecuteReader()
                ' Do what you want with the joined data here, 
                ' if you like you can BulkCopy it on another connection
            End Using
        End Using
    End Using
End Sub

End Module

这打印subreddits＆amp;我想弄清楚它打印出来的数量，或者我是否可以打印出一定数量。谢谢！

Answer 1

import requests

r = requests.get('http://www.reddit.com/reddits.json', headers= {'User-Agent': 'me'})
data = r.json()

print(len(data['data']['children']))

JSON的结构很复杂，所以我不完全确定你想要计算什么，但['data']['children']似乎是subreddits的根。

如何查看/获取使用reddits API下载的subreddits数量

1 个答案: