ABAP Select data from SAP table RELR_VIEIGE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RELR_VIEIGE
*  INTO TABLE @DATA(IT_RELR_VIEIGE2).
*--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_RELR_VIEIGE INDEX 1 INTO DATA(WA_RELR_VIEIGE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RELR_VIEIGE>-MANDT = 1.
<RELR_VIEIGE>-SGRUNDB = 1.
<RELR_VIEIGE>-SNRABT1 = 1.
<RELR_VIEIGE>-NLFDEIG = 1.
<RELR_VIEIGE>-INTRENO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RELR_VIEIGE-XNRA1, sy-vline,
  WA_RELR_VIEIGE-XGRSTLST, sy-vline,
  WA_RELR_VIEIGE-XEIGENT, sy-vline,
  WA_RELR_VIEIGE-DGULTAB, sy-vline,
  WA_RELR_VIEIGE-DGULTBIS, sy-vline,
  WA_RELR_VIEIGE-YEIGENT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RELR_VIEIGE 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_RELR_VIEIGE 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_RELR_VIEIGE INTO WA_RELR_VIEIGE.


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

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

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

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

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

*Conversion exit ALPHA, internal->external for field JVBUND
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RELR_VIEIGE-JVBUND
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RELR_VIEIGE-JVBUND.
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_RELR_VIEIGE_STR, 
MANDT TYPE STRING,
SGRUNDB TYPE STRING,
SNRABT1 TYPE STRING,
NLFDEIG TYPE STRING,
INTRENO TYPE STRING,
XNRA1 TYPE STRING,
XGRSTLST TYPE STRING,
XEIGENT TYPE STRING,
DGULTAB TYPE STRING,
DGULTBIS TYPE STRING,
YEIGENT TYPE STRING,
BRUCHTZ TYPE STRING,
BRUCHTN TYPE STRING,
GESHNDZ TYPE STRING,
GESHNDN TYPE STRING,
ADR TYPE STRING,
ADRJUR TYPE STRING,
STRICH TYPE STRING,
ROETUNG TYPE STRING,
KONZKZ TYPE STRING,
STRICH1 TYPE STRING,
BRUCHT TYPE STRING,
GESHAND TYPE STRING,
KONZKZEIG TYPE STRING,
KONZKZJEIG TYPE STRING,
GRLAGETEXT TYPE STRING,
BEARBNR TYPE STRING,
GRST_ZU_SEL TYPE STRING,
SPARTNR TYPE STRING,
JPARTNR TYPE STRING,
SPARTNR_OLD TYPE STRING,
ADR_REF TYPE STRING,
ADR_JUR_REF TYPE STRING,
VBUND TYPE STRING,
JVBUND TYPE STRING,
DGULTAB_OLD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RELR_VIEIGE_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_RELR_VIEIGE_STR-MANDT sy-vline 
WA_RELR_VIEIGE_STR-SGRUNDB sy-vline 
WA_RELR_VIEIGE_STR-SNRABT1 sy-vline 
WA_RELR_VIEIGE_STR-NLFDEIG sy-vline 
WA_RELR_VIEIGE_STR-INTRENO sy-vline 
WA_RELR_VIEIGE_STR-XNRA1 sy-vline 
WA_RELR_VIEIGE_STR-XGRSTLST sy-vline 
WA_RELR_VIEIGE_STR-XEIGENT sy-vline 
WA_RELR_VIEIGE_STR-DGULTAB sy-vline 
WA_RELR_VIEIGE_STR-DGULTBIS sy-vline 
WA_RELR_VIEIGE_STR-YEIGENT sy-vline 
WA_RELR_VIEIGE_STR-BRUCHTZ sy-vline 
WA_RELR_VIEIGE_STR-BRUCHTN sy-vline 
WA_RELR_VIEIGE_STR-GESHNDZ sy-vline 
WA_RELR_VIEIGE_STR-GESHNDN sy-vline 
WA_RELR_VIEIGE_STR-ADR sy-vline 
WA_RELR_VIEIGE_STR-ADRJUR sy-vline 
WA_RELR_VIEIGE_STR-STRICH sy-vline 
WA_RELR_VIEIGE_STR-ROETUNG sy-vline 
WA_RELR_VIEIGE_STR-KONZKZ sy-vline 
WA_RELR_VIEIGE_STR-STRICH1 sy-vline 
WA_RELR_VIEIGE_STR-BRUCHT sy-vline 
WA_RELR_VIEIGE_STR-GESHAND sy-vline 
WA_RELR_VIEIGE_STR-KONZKZEIG sy-vline 
WA_RELR_VIEIGE_STR-KONZKZJEIG sy-vline 
WA_RELR_VIEIGE_STR-GRLAGETEXT sy-vline 
WA_RELR_VIEIGE_STR-BEARBNR sy-vline 
WA_RELR_VIEIGE_STR-GRST_ZU_SEL sy-vline 
WA_RELR_VIEIGE_STR-SPARTNR sy-vline 
WA_RELR_VIEIGE_STR-JPARTNR sy-vline 
WA_RELR_VIEIGE_STR-SPARTNR_OLD sy-vline 
WA_RELR_VIEIGE_STR-ADR_REF sy-vline 
WA_RELR_VIEIGE_STR-ADR_JUR_REF sy-vline 
WA_RELR_VIEIGE_STR-VBUND sy-vline 
WA_RELR_VIEIGE_STR-JVBUND sy-vline 
WA_RELR_VIEIGE_STR-DGULTAB_OLD sy-vline      INTO ld_text SEPARATED BY SPACE.

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