ABAP Select data from SAP table VLCROLEDATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VLCROLEDATA
*  INTO TABLE @DATA(IT_VLCROLEDATA2).
*--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_VLCROLEDATA INDEX 1 INTO DATA(WA_VLCROLEDATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VLCROLEDATA>-MANDT = 1.
<VLCROLEDATA>-ROLE = 1.
<VLCROLEDATA>-WERKS = 1.
<VLCROLEDATA>-VKORG = 1.
<VLCROLEDATA>-VTWEG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VLCROLEDATA-SPART, sy-vline,
  WA_VLCROLEDATA-AUART, sy-vline,
  WA_VLCROLEDATA-KUNNR, sy-vline,
  WA_VLCROLEDATA-KUNWE, sy-vline,
  WA_VLCROLEDATA-KUNRG, sy-vline,
  WA_VLCROLEDATA-EKORG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VLCROLEDATA 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_VLCROLEDATA 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_VLCROLEDATA INTO WA_VLCROLEDATA.


*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 AUART, internal->external for field AUART
CALL FUNCTION 'CONVERSION_EXIT_AUART_OUTPUT'
  EXPORTING
    input =                      WA_VLCROLEDATA-AUART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VLCROLEDATA-AUART.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field VHORD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VLCROLEDATA-VHORD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VLCROLEDATA-VHORD.
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_VLCROLEDATA_STR, 
MANDT TYPE STRING,
ROLE TYPE STRING,
WERKS TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
AUART TYPE STRING,
KUNNR TYPE STRING,
KUNWE TYPE STRING,
KUNRG TYPE STRING,
EKORG TYPE STRING,
EKGRP TYPE STRING,
BSART TYPE STRING,
VHSAR TYPE STRING,
VHORD TYPE STRING,
KALSM TYPE STRING,
CURRENCY TYPE STRING,
XROLE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VLCROLEDATA_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_VLCROLEDATA_STR-MANDT sy-vline 
WA_VLCROLEDATA_STR-ROLE sy-vline 
WA_VLCROLEDATA_STR-WERKS sy-vline 
WA_VLCROLEDATA_STR-VKORG sy-vline 
WA_VLCROLEDATA_STR-VTWEG sy-vline 
WA_VLCROLEDATA_STR-SPART sy-vline 
WA_VLCROLEDATA_STR-AUART sy-vline 
WA_VLCROLEDATA_STR-KUNNR sy-vline 
WA_VLCROLEDATA_STR-KUNWE sy-vline 
WA_VLCROLEDATA_STR-KUNRG sy-vline 
WA_VLCROLEDATA_STR-EKORG sy-vline 
WA_VLCROLEDATA_STR-EKGRP sy-vline 
WA_VLCROLEDATA_STR-BSART sy-vline 
WA_VLCROLEDATA_STR-VHSAR sy-vline 
WA_VLCROLEDATA_STR-VHORD sy-vline 
WA_VLCROLEDATA_STR-KALSM sy-vline 
WA_VLCROLEDATA_STR-CURRENCY sy-vline 
WA_VLCROLEDATA_STR-XROLE sy-vline      INTO ld_text SEPARATED BY SPACE.

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