ABAP Select data from SAP table RELS_FLURST_ADR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RELS_FLURST_ADR
*  INTO TABLE @DATA(IT_RELS_FLURST_ADR2).
*--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_RELS_FLURST_ADR INDEX 1 INTO DATA(WA_RELS_FLURST_ADR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RELS_FLURST_ADR>-MANDT = 1.
<RELS_FLURST_ADR>-INTRENO_FL = 1.
<RELS_FLURST_ADR>-LAND1 = 1.
<RELS_FLURST_ADR>-LANDX = 1.
<RELS_FLURST_ADR>-BUNDESLAND = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RELS_FLURST_ADR-BEZEI, sy-vline,
  WA_RELS_FLURST_ADR-GEMARKUNG, sy-vline,
  WA_RELS_FLURST_ADR-XGEMARK, sy-vline,
  WA_RELS_FLURST_ADR-FLUR, sy-vline,
  WA_RELS_FLURST_ADR-FLURSTUECK, sy-vline,
  WA_RELS_FLURST_ADR-KREIS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RELS_FLURST_ADR 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_RELS_FLURST_ADR 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_RELS_FLURST_ADR INTO WA_RELS_FLURST_ADR.


*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_RELS_FLURST_ADR-FLUR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RELS_FLURST_ADR-FLUR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field FEINS_KAT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RELS_FLURST_ADR-FEINS_KAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RELS_FLURST_ADR-FEINS_KAT.
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_RELS_FLURST_ADR_STR, 
MANDT TYPE STRING,
INTRENO_FL TYPE STRING,
LAND1 TYPE STRING,
LANDX TYPE STRING,
BUNDESLAND TYPE STRING,
BEZEI TYPE STRING,
GEMARKUNG TYPE STRING,
XGEMARK TYPE STRING,
FLUR TYPE STRING,
FLURSTUECK TYPE STRING,
KREIS TYPE STRING,
XKREIS TYPE STRING,
GEMEINDE TYPE STRING,
XGEMEINDE TYPE STRING,
FLAECHE_KAT TYPE STRING,
FEINS_KAT TYPE STRING,
ADR_FLURST TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RELS_FLURST_ADR_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_RELS_FLURST_ADR_STR-MANDT sy-vline 
WA_RELS_FLURST_ADR_STR-INTRENO_FL sy-vline 
WA_RELS_FLURST_ADR_STR-LAND1 sy-vline 
WA_RELS_FLURST_ADR_STR-LANDX sy-vline 
WA_RELS_FLURST_ADR_STR-BUNDESLAND sy-vline 
WA_RELS_FLURST_ADR_STR-BEZEI sy-vline 
WA_RELS_FLURST_ADR_STR-GEMARKUNG sy-vline 
WA_RELS_FLURST_ADR_STR-XGEMARK sy-vline 
WA_RELS_FLURST_ADR_STR-FLUR sy-vline 
WA_RELS_FLURST_ADR_STR-FLURSTUECK sy-vline 
WA_RELS_FLURST_ADR_STR-KREIS sy-vline 
WA_RELS_FLURST_ADR_STR-XKREIS sy-vline 
WA_RELS_FLURST_ADR_STR-GEMEINDE sy-vline 
WA_RELS_FLURST_ADR_STR-XGEMEINDE sy-vline 
WA_RELS_FLURST_ADR_STR-FLAECHE_KAT sy-vline 
WA_RELS_FLURST_ADR_STR-FEINS_KAT sy-vline 
WA_RELS_FLURST_ADR_STR-ADR_FLURST sy-vline      INTO ld_text SEPARATED BY SPACE.

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