ABAP Select data from SAP table ERPSLS_BILLDOC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ERPSLS_BILLDOC
*  INTO TABLE @DATA(IT_ERPSLS_BILLDOC2).
*--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_ERPSLS_BILLDOC INDEX 1 INTO DATA(WA_ERPSLS_BILLDOC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ERPSLS_BILLDOC>-FKART = 1.
<ERPSLS_BILLDOC>-KUNAG = 1.
<ERPSLS_BILLDOC>-KUNRG = 1.
<ERPSLS_BILLDOC>-FKDAT = 1.
<ERPSLS_BILLDOC>-VKORG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ERPSLS_BILLDOC-VTWEG, sy-vline,
  WA_ERPSLS_BILLDOC-FKTYP, sy-vline,
  WA_ERPSLS_BILLDOC-VBELN, sy-vline,
  WA_ERPSLS_BILLDOC-VBTYP, sy-vline,
  WA_ERPSLS_BILLDOC-RFBSK, sy-vline,
  WA_ERPSLS_BILLDOC-ERNAM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ERPSLS_BILLDOC 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_ERPSLS_BILLDOC 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_ERPSLS_BILLDOC INTO WA_ERPSLS_BILLDOC.


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

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

*Conversion exit ALPHA, internal->external for field VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ERPSLS_BILLDOC-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ERPSLS_BILLDOC-VBELN.
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_ERPSLS_BILLDOC_STR, 
FKART TYPE STRING,
KUNAG TYPE STRING,
KUNRG TYPE STRING,
FKDAT TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
FKTYP TYPE STRING,
VBELN TYPE STRING,
VBTYP TYPE STRING,
RFBSK TYPE STRING,
ERNAM TYPE STRING,
NETWR TYPE STRING,
WAERK TYPE STRING,
MWSBK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ERPSLS_BILLDOC_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_ERPSLS_BILLDOC_STR-FKART sy-vline 
WA_ERPSLS_BILLDOC_STR-KUNAG sy-vline 
WA_ERPSLS_BILLDOC_STR-KUNRG sy-vline 
WA_ERPSLS_BILLDOC_STR-FKDAT sy-vline 
WA_ERPSLS_BILLDOC_STR-VKORG sy-vline 
WA_ERPSLS_BILLDOC_STR-VTWEG sy-vline 
WA_ERPSLS_BILLDOC_STR-FKTYP sy-vline 
WA_ERPSLS_BILLDOC_STR-VBELN sy-vline 
WA_ERPSLS_BILLDOC_STR-VBTYP sy-vline 
WA_ERPSLS_BILLDOC_STR-RFBSK sy-vline 
WA_ERPSLS_BILLDOC_STR-ERNAM sy-vline 
WA_ERPSLS_BILLDOC_STR-NETWR sy-vline 
WA_ERPSLS_BILLDOC_STR-WAERK sy-vline 
WA_ERPSLS_BILLDOC_STR-MWSBK sy-vline      INTO ld_text SEPARATED BY SPACE.

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