ABAP Select data from SAP table AAFVU into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP AAFVU table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to AAFVU. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the AAFVU table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_AAFVU TYPE STANDARD TABLE OF AAFVU,
      WA_AAFVU TYPE AAFVU,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <AAFVU> TYPE AAFVU.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_AAFVU.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM AAFVU
  INTO TABLE IT_AAFVU.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AAFVU
*  INTO TABLE @DATA(IT_AAFVU2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_AAFVU INDEX 1 INTO DATA(WA_AAFVU2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_AAFVU ASSIGNING <AAFVU>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AAFVU>-MANDT = 1.
<AAFVU>-AUFPL = 1.
<AAFVU>-APLZL = 1.
<AAFVU>-SLWID = 1.
<AAFVU>-USR00 = 1.

ENDLOOP.

LOOP AT IT_AAFVU INTO WA_AAFVU.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AAFVU-USR01, sy-vline,
  WA_AAFVU-USR02, sy-vline,
  WA_AAFVU-USR03, sy-vline,
  WA_AAFVU-USR04, sy-vline,
  WA_AAFVU-USE04, sy-vline,
  WA_AAFVU-USR05, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AAFVU you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_AAFVU TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_AAFVU INTO WA_AAFVU.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit CUNIT, internal->external for field USE04
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_AAFVU-USE04
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AAFVU-USE04.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field USE05
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_AAFVU-USE05
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AAFVU-USE05.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VNAME
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_AAFVU-VNAME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AAFVU-VNAME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RECID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_AAFVU-RECID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AAFVU-RECID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ETYPE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_AAFVU-ETYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AAFVU-ETYPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field JV_OTYPE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_AAFVU-JV_OTYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AAFVU-JV_OTYPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FERC_IND
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_AAFVU-FERC_IND
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AAFVU-FERC_IND.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_AAFVU_STR, 
MANDT TYPE STRING,
AUFPL TYPE STRING,
APLZL TYPE STRING,
SLWID TYPE STRING,
USR00 TYPE STRING,
USR01 TYPE STRING,
USR02 TYPE STRING,
USR03 TYPE STRING,
USR04 TYPE STRING,
USE04 TYPE STRING,
USR05 TYPE STRING,
USE05 TYPE STRING,
USR06 TYPE STRING,
USE06 TYPE STRING,
USR07 TYPE STRING,
USE07 TYPE STRING,
USR08 TYPE STRING,
USR09 TYPE STRING,
USR10 TYPE STRING,
USR11 TYPE STRING,
VNAME TYPE STRING,
RECID TYPE STRING,
ETYPE TYPE STRING,
JV_OTYPE TYPE STRING,
JV_JIBCL TYPE STRING,
JV_JIBSA TYPE STRING,
JV_OCO TYPE STRING,
DUMMY_AFVU_INCL_EEW_PS TYPE STRING,
SPARAMETER1 TYPE STRING,
SPARAMETER2 TYPE STRING,
SPARAMETER3 TYPE STRING,
ILART_OP TYPE STRING,
FERC_IND TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AAFVU_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_AAFVU_STR-MANDT sy-vline 
WA_AAFVU_STR-AUFPL sy-vline 
WA_AAFVU_STR-APLZL sy-vline 
WA_AAFVU_STR-SLWID sy-vline 
WA_AAFVU_STR-USR00 sy-vline 
WA_AAFVU_STR-USR01 sy-vline 
WA_AAFVU_STR-USR02 sy-vline 
WA_AAFVU_STR-USR03 sy-vline 
WA_AAFVU_STR-USR04 sy-vline 
WA_AAFVU_STR-USE04 sy-vline 
WA_AAFVU_STR-USR05 sy-vline 
WA_AAFVU_STR-USE05 sy-vline 
WA_AAFVU_STR-USR06 sy-vline 
WA_AAFVU_STR-USE06 sy-vline 
WA_AAFVU_STR-USR07 sy-vline 
WA_AAFVU_STR-USE07 sy-vline 
WA_AAFVU_STR-USR08 sy-vline 
WA_AAFVU_STR-USR09 sy-vline 
WA_AAFVU_STR-USR10 sy-vline 
WA_AAFVU_STR-USR11 sy-vline 
WA_AAFVU_STR-VNAME sy-vline 
WA_AAFVU_STR-RECID sy-vline 
WA_AAFVU_STR-ETYPE sy-vline 
WA_AAFVU_STR-JV_OTYPE sy-vline 
WA_AAFVU_STR-JV_JIBCL sy-vline 
WA_AAFVU_STR-JV_JIBSA sy-vline 
WA_AAFVU_STR-JV_OCO sy-vline 
WA_AAFVU_STR-DUMMY_AFVU_INCL_EEW_PS sy-vline 
WA_AAFVU_STR-SPARAMETER1 sy-vline 
WA_AAFVU_STR-SPARAMETER2 sy-vline 
WA_AAFVU_STR-SPARAMETER3 sy-vline 
WA_AAFVU_STR-ILART_OP sy-vline 
WA_AAFVU_STR-FERC_IND sy-vline 
WA_AAFVU_STR-KZ sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.