I want to know the use of $projection keyword. when should we use this keyword.
I want to know the difference of below two statements
business_partners[ bp_role = '01' ].company_name as customer_name --
I know this statement is used to display the customer name whose Bp_role value is equal to 01
But I didn't understand the below statement
mard[1: matnr = '0000000010'].lgort
Can you also please tell me about use of associations. Since we can use inner joins in which business scenario we can use associations.