ABAP Select data from SAP table RELA_FLAECHBILANZ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RELA_FLAECHBILANZ
*  INTO TABLE @DATA(IT_RELA_FLAECHBILANZ2).
*--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_RELA_FLAECHBILANZ INDEX 1 INTO DATA(WA_RELA_FLAECHBILANZ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RELA_FLAECHBILANZ>-PARTNR = 1.
<RELA_FLAECHBILANZ>-ROLETYP = 1.
<RELA_FLAECHBILANZ>-INTRENO = 1.
<RELA_FLAECHBILANZ>-VERTR_BINDUNG = 1.
<RELA_FLAECHBILANZ>-VERTR_BINDUNG_FEINS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RELA_FLAECHBILANZ-NUTZUNGSFLAECHE, sy-vline,
  WA_RELA_FLAECHBILANZ-NUTZUNGSFLAECHE_FEINS, sy-vline,
  WA_RELA_FLAECHBILANZ-VERTRAGSFLAECHE, sy-vline,
  WA_RELA_FLAECHBILANZ-VERTRAGSFLAECHE_FEINS, sy-vline,
  WA_RELA_FLAECHBILANZ-BESITZFLAECHE, sy-vline,
  WA_RELA_FLAECHBILANZ-BESITZFLAECHE_FEINS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RELA_FLAECHBILANZ 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_RELA_FLAECHBILANZ 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_RELA_FLAECHBILANZ INTO WA_RELA_FLAECHBILANZ.


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

*Conversion exit CUNIT, internal->external for field VERTR_BINDUNG_FEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RELA_FLAECHBILANZ-VERTR_BINDUNG_FEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RELA_FLAECHBILANZ-VERTR_BINDUNG_FEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field NUTZUNGSFLAECHE_FEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RELA_FLAECHBILANZ-NUTZUNGSFLAECHE_FEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RELA_FLAECHBILANZ-NUTZUNGSFLAECHE_FEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VERTRAGSFLAECHE_FEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RELA_FLAECHBILANZ-VERTRAGSFLAECHE_FEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RELA_FLAECHBILANZ-VERTRAGSFLAECHE_FEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field BESITZFLAECHE_FEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RELA_FLAECHBILANZ-BESITZFLAECHE_FEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RELA_FLAECHBILANZ-BESITZFLAECHE_FEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field EIGENTUMSFLAECHE_FEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RELA_FLAECHBILANZ-EIGENTUMSFLAECHE_FEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RELA_FLAECHBILANZ-EIGENTUMSFLAECHE_FEINS.
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_RELA_FLAECHBILANZ_STR, 
PARTNR TYPE STRING,
ROLETYP TYPE STRING,
INTRENO TYPE STRING,
VERTR_BINDUNG TYPE STRING,
VERTR_BINDUNG_FEINS TYPE STRING,
NUTZUNGSFLAECHE TYPE STRING,
NUTZUNGSFLAECHE_FEINS TYPE STRING,
VERTRAGSFLAECHE TYPE STRING,
VERTRAGSFLAECHE_FEINS TYPE STRING,
BESITZFLAECHE TYPE STRING,
BESITZFLAECHE_FEINS TYPE STRING,
EIGENTUMSFLAECHE TYPE STRING,
EIGENTUMSFLAECHE_FEINS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RELA_FLAECHBILANZ_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_RELA_FLAECHBILANZ_STR-PARTNR sy-vline 
WA_RELA_FLAECHBILANZ_STR-ROLETYP sy-vline 
WA_RELA_FLAECHBILANZ_STR-INTRENO sy-vline 
WA_RELA_FLAECHBILANZ_STR-VERTR_BINDUNG sy-vline 
WA_RELA_FLAECHBILANZ_STR-VERTR_BINDUNG_FEINS sy-vline 
WA_RELA_FLAECHBILANZ_STR-NUTZUNGSFLAECHE sy-vline 
WA_RELA_FLAECHBILANZ_STR-NUTZUNGSFLAECHE_FEINS sy-vline 
WA_RELA_FLAECHBILANZ_STR-VERTRAGSFLAECHE sy-vline 
WA_RELA_FLAECHBILANZ_STR-VERTRAGSFLAECHE_FEINS sy-vline 
WA_RELA_FLAECHBILANZ_STR-BESITZFLAECHE sy-vline 
WA_RELA_FLAECHBILANZ_STR-BESITZFLAECHE_FEINS sy-vline 
WA_RELA_FLAECHBILANZ_STR-EIGENTUMSFLAECHE sy-vline 
WA_RELA_FLAECHBILANZ_STR-EIGENTUMSFLAECHE_FEINS sy-vline      INTO ld_text SEPARATED BY SPACE.

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