ABAP Select data from SAP table AFFWPRO into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP AFFWPRO 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 AFFWPRO. 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 AFFWPRO 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_AFFWPRO TYPE STANDARD TABLE OF AFFWPRO,
      WA_AFFWPRO TYPE AFFWPRO,
      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: <AFFWPRO> TYPE AFFWPRO.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AFFWPRO
*  INTO TABLE @DATA(IT_AFFWPRO2).
*--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_AFFWPRO INDEX 1 INTO DATA(WA_AFFWPRO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AFFWPRO>-MANDT = 1.
<AFFWPRO>-AUFNR = 1.
<AFFWPRO>-WEBLNR = 1.
<AFFWPRO>-WEBLPOS = 1.
<AFFWPRO>-UPDDA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AFFWPRO-UPDZT, sy-vline,
  WA_AFFWPRO-MATNR, sy-vline,
  WA_AFFWPRO-WERKS, sy-vline,
  WA_AFFWPRO-LGORT, sy-vline,
  WA_AFFWPRO-CHARG, sy-vline,
  WA_AFFWPRO-BWART, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AFFWPRO 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_AFFWPRO 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_AFFWPRO INTO WA_AFFWPRO.


*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 AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_AFFWPRO-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AFFWPRO-AUFNR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field ERFME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_AFFWPRO-ERFME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AFFWPRO-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_AFFWPRO_STR, 
MANDT TYPE STRING,
AUFNR TYPE STRING,
WEBLNR TYPE STRING,
WEBLPOS TYPE STRING,
UPDDA TYPE STRING,
UPDZT TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
CHARG TYPE STRING,
BWART TYPE STRING,
ERFMG TYPE STRING,
ERFME TYPE STRING,
RUECK TYPE STRING,
RMZHL TYPE STRING,
ERSDA TYPE STRING,
ERZET TYPE STRING,
USNAM TYPE STRING,
TCODE TYPE STRING,
UPDIND TYPE STRING,
CALLED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AFFWPRO_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_AFFWPRO_STR-MANDT sy-vline 
WA_AFFWPRO_STR-AUFNR sy-vline 
WA_AFFWPRO_STR-WEBLNR sy-vline 
WA_AFFWPRO_STR-WEBLPOS sy-vline 
WA_AFFWPRO_STR-UPDDA sy-vline 
WA_AFFWPRO_STR-UPDZT sy-vline 
WA_AFFWPRO_STR-MATNR sy-vline 
WA_AFFWPRO_STR-WERKS sy-vline 
WA_AFFWPRO_STR-LGORT sy-vline 
WA_AFFWPRO_STR-CHARG sy-vline 
WA_AFFWPRO_STR-BWART sy-vline 
WA_AFFWPRO_STR-ERFMG sy-vline 
WA_AFFWPRO_STR-ERFME sy-vline 
WA_AFFWPRO_STR-RUECK sy-vline 
WA_AFFWPRO_STR-RMZHL sy-vline 
WA_AFFWPRO_STR-ERSDA sy-vline 
WA_AFFWPRO_STR-ERZET sy-vline 
WA_AFFWPRO_STR-USNAM sy-vline 
WA_AFFWPRO_STR-TCODE sy-vline 
WA_AFFWPRO_STR-UPDIND sy-vline 
WA_AFFWPRO_STR-CALLED sy-vline      INTO ld_text SEPARATED BY SPACE.

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