find the True or False compare two table using common column in both table

Hi , Anonymous 

Thank you for your sample data and detailed description for yoor need.

Here are the steps you can refer to :
(1)My test data is the same as yours.

(2)We can click "New Column" and enter:

True/False = var _cur_code = [Itemcode]
var _second_code =COUNTROWS(FILTER('Second Table','Second Table'[Itemcode]=_cur_code))
var _pack = [Pack outer]
var _bomtext = MAXX( FILTER('Second Table','Second Table'[Itemcode]=_cur_code ) ,[BOMTEXT])
return
IF(_second_code<=0 , "True" , IF(_pack<> BLANK() ,"True" , IF(_bomtext<> BLANK() ,"False" ,"True")))

(3)Then we can meet your need , the result is as follows:

Thank you for your time and sharing, and thank you for your support and understanding of PowerBI! 

Best Regards,

Aniya Zhang

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