pack()pack()

• 10/29/2020
• • o
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从名称和值的列表创建一个 dynamic 对象（属性包）。Creates a dynamic object (property bag) from a list of names and values.

pack_dictionary() 函数的别名。Alias to pack_dictionary() function.

语法Syntax

pack(key1, value1, key2, value2,... )pack(key1, value1, key2, value2,... )

参数Arguments

• 键和值的交替列表（列表的总长度必须为偶数）An alternating list of keys and values (the total length of the list must be even)
• 所有键都必须为非空常量字符串All keys must be non-empty constant strings

示例Examples

以下示例返回 {"Level":"Information","ProcessID":1234,"Data":{"url":"www.bing.com"}}：The following example returns {"Level":"Information","ProcessID":1234,"Data":{"url":"www.bing.com"}}:

pack("Level", "Information", "ProcessID", 1234, "Data", pack("url", "www.bing.com"))

让我们看看 2 个表：SmsMessages 和 MmsMessages：Lets take 2 tables, SmsMessages and MmsMessages:

表 SmsMessagesTable SmsMessages

表 MmsMessagesTable MmsMessages

以下查询：The following query:

SmsMessages 
| extend Packed=pack("CharsCount", CharsCount) 
| union withsource=TableName kind=inner 
( MmsMessages 
  | extend Packed=pack("AttachmentSize", AttachmentSize, "AttachmentType", AttachmentType, "AttachmentName", AttachmentName))
| where SourceNumber == "555-555-1234"

返回：Returns: