ABAP Select data from SAP table RELUERLIST1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RELUERLIST1 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 RELUERLIST1. 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 RELUERLIST1 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_RELUERLIST1 TYPE STANDARD TABLE OF RELUERLIST1,
      WA_RELUERLIST1 TYPE RELUERLIST1,
      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: <RELUERLIST1> TYPE RELUERLIST1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RELUERLIST1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RELUERLIST1
  INTO TABLE IT_RELUERLIST1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RELUERLIST1
*  INTO TABLE @DATA(IT_RELUERLIST12).
*--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_RELUERLIST1 INDEX 1 INTO DATA(WA_RELUERLIST12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RELUERLIST1 ASSIGNING <RELUERLIST1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RELUERLIST1>-LAND1 = 1.
<RELUERLIST1>-BUNDESLAND = 1.
<RELUERLIST1>-GEMARKUNG = 1.
<RELUERLIST1>-FLUR = 1.
<RELUERLIST1>-FLURSTUECK = 1.

ENDLOOP.

LOOP AT IT_RELUERLIST1 INTO WA_RELUERLIST1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RELUERLIST1-FLAGDEBBEN, sy-vline,
  WA_RELUERLIST1-XBUNDESLAND, sy-vline,
  WA_RELUERLIST1-XGEMARK, sy-vline,
  WA_RELUERLIST1-KREIS, sy-vline,
  WA_RELUERLIST1-XKREIS, sy-vline,
  WA_RELUERLIST1-GEMEINDE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RELUERLIST1 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_RELUERLIST1 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_RELUERLIST1 INTO WA_RELUERLIST1.


*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 FLUR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RELUERLIST1-FLUR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RELUERLIST1-FLUR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PARTNR_OWNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RELUERLIST1-PARTNR_OWNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RELUERLIST1-PARTNR_OWNER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VBUND_OWNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RELUERLIST1-VBUND_OWNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RELUERLIST1-VBUND_OWNER.
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_RELUERLIST1_STR, 
LAND1 TYPE STRING,
BUNDESLAND TYPE STRING,
GEMARKUNG TYPE STRING,
FLUR TYPE STRING,
FLURSTUECK TYPE STRING,
FLAGDEBBEN TYPE STRING,
XBUNDESLAND TYPE STRING,
XGEMARK TYPE STRING,
KREIS TYPE STRING,
XKREIS TYPE STRING,
GEMEINDE TYPE STRING,
XGEMEINDE TYPE STRING,
REGBEZIRK TYPE STRING,
XMADMDIST TYPE STRING,
STADTBEZIRK TYPE STRING,
XMCITDIST TYPE STRING,
STADTTEIL TYPE STRING,
XMCITSEC TYPE STRING,
PARTNR_OWNER TYPE STRING,
PARTNR_OWNER_EXT TYPE STRING,
VBUND_OWNER TYPE STRING,
NAME_OWNER TYPE STRING,
COUNTRY TYPE STRING,
STATE TYPE STRING,
DISTRICT TYPE STRING,
MUNICIPAL TYPE STRING,
XERMUNICIPAL TYPE STRING,
SUBDISTRICT TYPE STRING,
XERSUBDISTRICT TYPE STRING,
ERPAGENO TYPE STRING,
ESNUMBER TYPE STRING,
ERPAGE TYPE STRING,
ESTYPE TYPE STRING,
XMESTYPE TYPE STRING,
DREGON TYPE STRING,
DDELON TYPE STRING,
INTRENOER TYPE STRING,
INTRENOPL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RELUERLIST1_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_RELUERLIST1_STR-LAND1 sy-vline 
WA_RELUERLIST1_STR-BUNDESLAND sy-vline 
WA_RELUERLIST1_STR-GEMARKUNG sy-vline 
WA_RELUERLIST1_STR-FLUR sy-vline 
WA_RELUERLIST1_STR-FLURSTUECK sy-vline 
WA_RELUERLIST1_STR-FLAGDEBBEN sy-vline 
WA_RELUERLIST1_STR-XBUNDESLAND sy-vline 
WA_RELUERLIST1_STR-XGEMARK sy-vline 
WA_RELUERLIST1_STR-KREIS sy-vline 
WA_RELUERLIST1_STR-XKREIS sy-vline 
WA_RELUERLIST1_STR-GEMEINDE sy-vline 
WA_RELUERLIST1_STR-XGEMEINDE sy-vline 
WA_RELUERLIST1_STR-REGBEZIRK sy-vline 
WA_RELUERLIST1_STR-XMADMDIST sy-vline 
WA_RELUERLIST1_STR-STADTBEZIRK sy-vline 
WA_RELUERLIST1_STR-XMCITDIST sy-vline 
WA_RELUERLIST1_STR-STADTTEIL sy-vline 
WA_RELUERLIST1_STR-XMCITSEC sy-vline 
WA_RELUERLIST1_STR-PARTNR_OWNER sy-vline 
WA_RELUERLIST1_STR-PARTNR_OWNER_EXT sy-vline 
WA_RELUERLIST1_STR-VBUND_OWNER sy-vline 
WA_RELUERLIST1_STR-NAME_OWNER sy-vline 
WA_RELUERLIST1_STR-COUNTRY sy-vline 
WA_RELUERLIST1_STR-STATE sy-vline 
WA_RELUERLIST1_STR-DISTRICT sy-vline 
WA_RELUERLIST1_STR-MUNICIPAL sy-vline 
WA_RELUERLIST1_STR-XERMUNICIPAL sy-vline 
WA_RELUERLIST1_STR-SUBDISTRICT sy-vline 
WA_RELUERLIST1_STR-XERSUBDISTRICT sy-vline 
WA_RELUERLIST1_STR-ERPAGENO sy-vline 
WA_RELUERLIST1_STR-ESNUMBER sy-vline 
WA_RELUERLIST1_STR-ERPAGE sy-vline 
WA_RELUERLIST1_STR-ESTYPE sy-vline 
WA_RELUERLIST1_STR-XMESTYPE sy-vline 
WA_RELUERLIST1_STR-DREGON sy-vline 
WA_RELUERLIST1_STR-DDELON sy-vline 
WA_RELUERLIST1_STR-INTRENOER sy-vline 
WA_RELUERLIST1_STR-INTRENOPL sy-vline      INTO ld_text SEPARATED BY SPACE.

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