Get Example source ABAP code based on a different SAP table
ABAP_SQLEXP - Null Expression This example demonstrates null expressions in AB_SQL .
ABAP_SOURCE_CODE DEMO CL_DEMO_SQL_EXPR_NULL
ABAP_DESCRIPTION In the SELECT list, two simple case distinctions are made which both explicitly specify the null expression NULL after ELSE.
The column distance returns the result of all matches and if there is no match returns the null value.
The column null returns an unknown result for the first comparison, which is true, and the null value for the second comparison, which is not true. The null value is converted to the type-dependent initial value in both cases when passed to the result table.
