ABAP Select data from SAP table ROI0_REL_SD_DATA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ROI0_REL_SD_DATA 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 ROI0_REL_SD_DATA. 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 ROI0_REL_SD_DATA 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_ROI0_REL_SD_DATA TYPE STANDARD TABLE OF ROI0_REL_SD_DATA,
      WA_ROI0_REL_SD_DATA TYPE ROI0_REL_SD_DATA,
      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: <ROI0_REL_SD_DATA> TYPE ROI0_REL_SD_DATA.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ROI0_REL_SD_DATA.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ROI0_REL_SD_DATA
  INTO TABLE IT_ROI0_REL_SD_DATA.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ROI0_REL_SD_DATA
*  INTO TABLE @DATA(IT_ROI0_REL_SD_DATA2).
*--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_ROI0_REL_SD_DATA INDEX 1 INTO DATA(WA_ROI0_REL_SD_DATA2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ROI0_REL_SD_DATA ASSIGNING <ROI0_REL_SD_DATA>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ROI0_REL_SD_DATA>-VKORG = 1.
<ROI0_REL_SD_DATA>-VTWEG = 1.
<ROI0_REL_SD_DATA>-SPART = 1.
<ROI0_REL_SD_DATA>-WERKS = 1.
<ROI0_REL_SD_DATA>-LGORT = 1.

ENDLOOP.

LOOP AT IT_ROI0_REL_SD_DATA INTO WA_ROI0_REL_SD_DATA.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ROI0_REL_SD_DATA-VSTEL, sy-vline,
  WA_ROI0_REL_SD_DATA-LADGR, sy-vline,
  WA_ROI0_REL_SD_DATA-MBRSH, sy-vline,
  WA_ROI0_REL_SD_DATA-MTART, sy-vline,
  WA_ROI0_REL_SD_DATA-MATKL, sy-vline,
  WA_ROI0_REL_SD_DATA-LZONE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ROI0_REL_SD_DATA 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_ROI0_REL_SD_DATA 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_ROI0_REL_SD_DATA INTO WA_ROI0_REL_SD_DATA.


*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_ROI0_REL_SD_DATA-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROI0_REL_SD_DATA-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROI0_REL_SD_DATA-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROI0_REL_SD_DATA-KUNNR.
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_ROI0_REL_SD_DATA_STR, 
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
VSTEL TYPE STRING,
LADGR TYPE STRING,
MBRSH TYPE STRING,
MTART TYPE STRING,
MATKL TYPE STRING,
LZONE TYPE STRING,
MATNR TYPE STRING,
VSBED TYPE STRING,
OIC_MOT TYPE STRING,
TPLST TYPE STRING,
KUNNR TYPE STRING,
BWTAR TYPE STRING,
CCAPGR TYPE STRING,
GRTYPE TYPE STRING,
GRNAME TYPE STRING,
INCO1 TYPE STRING,
PSTYV TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ROI0_REL_SD_DATA_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_ROI0_REL_SD_DATA_STR-VKORG sy-vline 
WA_ROI0_REL_SD_DATA_STR-VTWEG sy-vline 
WA_ROI0_REL_SD_DATA_STR-SPART sy-vline 
WA_ROI0_REL_SD_DATA_STR-WERKS sy-vline 
WA_ROI0_REL_SD_DATA_STR-LGORT sy-vline 
WA_ROI0_REL_SD_DATA_STR-VSTEL sy-vline 
WA_ROI0_REL_SD_DATA_STR-LADGR sy-vline 
WA_ROI0_REL_SD_DATA_STR-MBRSH sy-vline 
WA_ROI0_REL_SD_DATA_STR-MTART sy-vline 
WA_ROI0_REL_SD_DATA_STR-MATKL sy-vline 
WA_ROI0_REL_SD_DATA_STR-LZONE sy-vline 
WA_ROI0_REL_SD_DATA_STR-MATNR sy-vline 
WA_ROI0_REL_SD_DATA_STR-VSBED sy-vline 
WA_ROI0_REL_SD_DATA_STR-OIC_MOT sy-vline 
WA_ROI0_REL_SD_DATA_STR-TPLST sy-vline 
WA_ROI0_REL_SD_DATA_STR-KUNNR sy-vline 
WA_ROI0_REL_SD_DATA_STR-BWTAR sy-vline 
WA_ROI0_REL_SD_DATA_STR-CCAPGR sy-vline 
WA_ROI0_REL_SD_DATA_STR-GRTYPE sy-vline 
WA_ROI0_REL_SD_DATA_STR-GRNAME sy-vline 
WA_ROI0_REL_SD_DATA_STR-INCO1 sy-vline 
WA_ROI0_REL_SD_DATA_STR-PSTYV sy-vline      INTO ld_text SEPARATED BY SPACE.

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