删除 KQL 中的特殊字符

Question

如何从下面的列值中删除 KQL 中的 [" 和 "]？

["xyz@test.com"]  
["abc@test.com"]  
["123@test.com"]

谢谢

Answer 1

我想您也想删除双引号。

datatable(col:string)
[
     '["xyz@test.com"]'  
    ,'["abc@test.com"]' 
    ,'["123@test.com"]'
]
| extend option_1 = trim(@'^\["|"]$', col)          // Trim opening [" and closing "]
| extend option_2 = trim(@'[[\]"]+', col)           // Trim sequences of the characters [, ] and "
| extend option_3 = extract(@'^\["(.*)"]$', 1, col) // Extract the expression between the opening [" and closing "]
| extend option_4 = tostring(todynamic(col)[0])     // Convert to json (resulting in json array) and retrieve the 1st element

col	option_1	option_2	option_3	option_4
["xyz@test.com"]	xyz@test.com	xyz@test.com	xyz@test.com	xyz@test.com
["abc@test.com"]	abc@test.com	abc@test.com	abc@test.com	abc@test.com
["123@test.com"]	123@test.com	123@test.com	123@test.com	123@test.com

Fiddle

删除 KQL 中的特殊字符

Remove Special Characters in KQL

kql