ABAP Select data from SAP table AFFWRM 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 AFFWRM 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 AFFWRM. 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 AFFWRM 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_AFFWRM TYPE STANDARD TABLE OF AFFWRM,
      WA_AFFWRM TYPE AFFWRM,
      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: <AFFWRM> TYPE AFFWRM.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AFFWRM
*  INTO TABLE @DATA(IT_AFFWRM2).
*--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_AFFWRM INDEX 1 INTO DATA(WA_AFFWRM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AFFWRM>-MANDT = 1.
<AFFWRM>-WEBLNR = 1.
<AFFWRM>-WEBLPOS = 1.
<AFFWRM>-ERSDA = 1.
<AFFWRM>-ERNAM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AFFWRM-LAEDA, sy-vline,
  WA_AFFWRM-AENAM, sy-vline,
  WA_AFFWRM-MATNR, sy-vline,
  WA_AFFWRM-WERKS, sy-vline,
  WA_AFFWRM-LGORT, sy-vline,
  WA_AFFWRM-CHARG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AFFWRM 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_AFFWRM 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_AFFWRM INTO WA_AFFWRM.


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

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

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

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

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

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

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

*Conversion exit CUNIT, internal->external for field /CWM/ERFME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_AFFWRM-/CWM/ERFME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AFFWRM-/CWM/ERFME.
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_AFFWRM_STR, 
MANDT TYPE STRING,
WEBLNR TYPE STRING,
WEBLPOS TYPE STRING,
ERSDA TYPE STRING,
ERNAM TYPE STRING,
LAEDA TYPE STRING,
AENAM TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
CHARG TYPE STRING,
BWART TYPE STRING,
SOBKZ TYPE STRING,
KZVBR TYPE STRING,
KDAUF TYPE STRING,
KDPOS TYPE STRING,
KDEIN TYPE STRING,
SHKZG TYPE STRING,
WAERS TYPE STRING,
ERFMG TYPE STRING,
ERFME TYPE STRING,
AUFNR TYPE STRING,
RSNUM TYPE STRING,
RSPOS TYPE STRING,
KZBEW TYPE STRING,
LGNUM TYPE STRING,
LGTYP TYPE STRING,
LGPLA TYPE STRING,
AUFPS TYPE STRING,
MSGID TYPE STRING,
MSGNO TYPE STRING,
MSGTY TYPE STRING,
MSGV1 TYPE STRING,
MSGV2 TYPE STRING,
MSGV3 TYPE STRING,
MSGV4 TYPE STRING,
AUTYP TYPE STRING,
LIFNR TYPE STRING,
INSMK TYPE STRING,
FEVOR TYPE STRING,
DISPO TYPE STRING,
FWDAT TYPE STRING,
BUDAT TYPE STRING,
BLDAT TYPE STRING,
MHDAT TYPE STRING,
PS_PSP_PNR TYPE STRING,
ERZET TYPE STRING,
FWZET TYPE STRING,
PRVBE TYPE STRING,
PRTNR TYPE STRING,
GRUND TYPE STRING,
/CWM/ERFMG TYPE STRING,
/CWM/ERFME TYPE STRING,
FLG_ORIG TYPE STRING,
VERID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AFFWRM_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_AFFWRM_STR-MANDT sy-vline 
WA_AFFWRM_STR-WEBLNR sy-vline 
WA_AFFWRM_STR-WEBLPOS sy-vline 
WA_AFFWRM_STR-ERSDA sy-vline 
WA_AFFWRM_STR-ERNAM sy-vline 
WA_AFFWRM_STR-LAEDA sy-vline 
WA_AFFWRM_STR-AENAM sy-vline 
WA_AFFWRM_STR-MATNR sy-vline 
WA_AFFWRM_STR-WERKS sy-vline 
WA_AFFWRM_STR-LGORT sy-vline 
WA_AFFWRM_STR-CHARG sy-vline 
WA_AFFWRM_STR-BWART sy-vline 
WA_AFFWRM_STR-SOBKZ sy-vline 
WA_AFFWRM_STR-KZVBR sy-vline 
WA_AFFWRM_STR-KDAUF sy-vline 
WA_AFFWRM_STR-KDPOS sy-vline 
WA_AFFWRM_STR-KDEIN sy-vline 
WA_AFFWRM_STR-SHKZG sy-vline 
WA_AFFWRM_STR-WAERS sy-vline 
WA_AFFWRM_STR-ERFMG sy-vline 
WA_AFFWRM_STR-ERFME sy-vline 
WA_AFFWRM_STR-AUFNR sy-vline 
WA_AFFWRM_STR-RSNUM sy-vline 
WA_AFFWRM_STR-RSPOS sy-vline 
WA_AFFWRM_STR-KZBEW sy-vline 
WA_AFFWRM_STR-LGNUM sy-vline 
WA_AFFWRM_STR-LGTYP sy-vline 
WA_AFFWRM_STR-LGPLA sy-vline 
WA_AFFWRM_STR-AUFPS sy-vline 
WA_AFFWRM_STR-MSGID sy-vline 
WA_AFFWRM_STR-MSGNO sy-vline 
WA_AFFWRM_STR-MSGTY sy-vline 
WA_AFFWRM_STR-MSGV1 sy-vline 
WA_AFFWRM_STR-MSGV2 sy-vline 
WA_AFFWRM_STR-MSGV3 sy-vline 
WA_AFFWRM_STR-MSGV4 sy-vline 
WA_AFFWRM_STR-AUTYP sy-vline 
WA_AFFWRM_STR-LIFNR sy-vline 
WA_AFFWRM_STR-INSMK sy-vline 
WA_AFFWRM_STR-FEVOR sy-vline 
WA_AFFWRM_STR-DISPO sy-vline 
WA_AFFWRM_STR-FWDAT sy-vline 
WA_AFFWRM_STR-BUDAT sy-vline 
WA_AFFWRM_STR-BLDAT sy-vline 
WA_AFFWRM_STR-MHDAT sy-vline 
WA_AFFWRM_STR-PS_PSP_PNR sy-vline 
WA_AFFWRM_STR-ERZET sy-vline 
WA_AFFWRM_STR-FWZET sy-vline 
WA_AFFWRM_STR-PRVBE sy-vline 
WA_AFFWRM_STR-PRTNR sy-vline 
WA_AFFWRM_STR-GRUND sy-vline 
WA_AFFWRM_STR-/CWM/ERFMG sy-vline 
WA_AFFWRM_STR-/CWM/ERFME sy-vline 
WA_AFFWRM_STR-FLG_ORIG sy-vline 
WA_AFFWRM_STR-VERID sy-vline      INTO ld_text SEPARATED BY SPACE.

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