ABAP Select data from SAP table MOAF 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 MOAF 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 MOAF. 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 MOAF 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_MOAF TYPE STANDARD TABLE OF MOAF,
      WA_MOAF TYPE MOAF,
      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: <MOAF> TYPE MOAF.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MOAF
*  INTO TABLE @DATA(IT_MOAF2).
*--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_MOAF INDEX 1 INTO DATA(WA_MOAF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MOAF>-MATNR = 1.
<MOAF>-WERKS = 1.
<MOAF>-GSMNG = 1.
<MOAF>-AVMNG = 1.
<MOAF>-LGORT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MOAF-LFMNG, sy-vline,
  WA_MOAF-LFDAT, sy-vline,
  WA_MOAF-VFMNG, sy-vline,
  WA_MOAF-VFDAT, sy-vline,
  WA_MOAF-GSBTR, sy-vline,
  WA_MOAF-KNTTP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MOAF 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_MOAF 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_MOAF INTO WA_MOAF.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MOAF-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MOAF-MATNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ABPSP, internal->external for field PSPEL
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_MOAF-PSPEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MOAF-PSPEL.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MOAF-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MOAF-AUFNR.
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_MOAF_STR, 
MATNR TYPE STRING,
WERKS TYPE STRING,
GSMNG TYPE STRING,
AVMNG TYPE STRING,
LGORT TYPE STRING,
LFMNG TYPE STRING,
LFDAT TYPE STRING,
VFMNG TYPE STRING,
VFDAT TYPE STRING,
GSBTR TYPE STRING,
KNTTP TYPE STRING,
SOBKZ TYPE STRING,
KZVBR TYPE STRING,
KDAUF TYPE STRING,
KDPOS TYPE STRING,
PSPEL TYPE STRING,
SERNR TYPE STRING,
VERID TYPE STRING,
CUOBJ TYPE STRING,
MNTGA TYPE STRING,
PLNUM TYPE STRING,
AUART TYPE STRING,
AUFNR TYPE STRING,
RSNUM TYPE STRING,
KZBWS TYPE STRING,
TECHS TYPE STRING,
SGT_SCAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MOAF_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_MOAF_STR-MATNR sy-vline 
WA_MOAF_STR-WERKS sy-vline 
WA_MOAF_STR-GSMNG sy-vline 
WA_MOAF_STR-AVMNG sy-vline 
WA_MOAF_STR-LGORT sy-vline 
WA_MOAF_STR-LFMNG sy-vline 
WA_MOAF_STR-LFDAT sy-vline 
WA_MOAF_STR-VFMNG sy-vline 
WA_MOAF_STR-VFDAT sy-vline 
WA_MOAF_STR-GSBTR sy-vline 
WA_MOAF_STR-KNTTP sy-vline 
WA_MOAF_STR-SOBKZ sy-vline 
WA_MOAF_STR-KZVBR sy-vline 
WA_MOAF_STR-KDAUF sy-vline 
WA_MOAF_STR-KDPOS sy-vline 
WA_MOAF_STR-PSPEL sy-vline 
WA_MOAF_STR-SERNR sy-vline 
WA_MOAF_STR-VERID sy-vline 
WA_MOAF_STR-CUOBJ sy-vline 
WA_MOAF_STR-MNTGA sy-vline 
WA_MOAF_STR-PLNUM sy-vline 
WA_MOAF_STR-AUART sy-vline 
WA_MOAF_STR-AUFNR sy-vline 
WA_MOAF_STR-RSNUM sy-vline 
WA_MOAF_STR-KZBWS sy-vline 
WA_MOAF_STR-TECHS sy-vline 
WA_MOAF_STR-SGT_SCAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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