Many ABAP developers are looking for ways to dynamically populate data from the database into a dynamic work area and dynamic internal table structure. This code works with any 'STANDARD' table in SAP Enterprise. This will not work from 4.6B or lower, but may work in 4.6C or greater. If you're system supports unicode, make sure your 'Unicode checks active' checkbox is not selected in your program attributes.
REPORT Z_DYNAMIC_ITAB. ... FIELD-SYMBOLS: <F_WA> TYPE ANY. FIELD-SYMBOLS: <F_ITAB> TYPE standard TABLE. TYPES: FIELDREF TYPE REF TO DATA. DATA: DYN_TABLE TYPE FIELDREF. ... PARAMETERS: P_TABLE like RSRD1-TBMA_VAL. ... CREATE DATA DYN_TABLE TYPE (P_TABLE). ASSIGN DYN_TABLE->* TO <F_WA>. CREATE DATA DYN_TABLE TYPE standard TABLE OF (P_TABLE). ASSIGN DYN_TABLE->* TO <F_ITAB>. ... SELECT * FROM (P_TABLE) INTO <F_WA>. APPEND <F_WA> TO <F_ITAB>. ENDSELECT.