ABAP Select data from SAP table RELULAIDEVPLAN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RELULAIDEVPLAN
*  INTO TABLE @DATA(IT_RELULAIDEVPLAN2).
*--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_RELULAIDEVPLAN INDEX 1 INTO DATA(WA_RELULAIDEVPLAN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RELULAIDEVPLAN>-MANDT = 1.
<RELULAIDEVPLAN>-INTRENO = 1.
<RELULAIDEVPLAN>-PARTID = 1.
<RELULAIDEVPLAN>-KENNZEICHEN = 1.
<RELULAIDEVPLAN>-LFDNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RELULAIDEVPLAN-NUTZUNGSART, sy-vline,
  WA_RELULAIDEVPLAN-UNTERNUTZUNGSART, sy-vline,
  WA_RELULAIDEVPLAN-FLAECHE, sy-vline,
  WA_RELULAIDEVPLAN-EINHEIT, sy-vline,
  WA_RELULAIDEVPLAN-BODENKLASSE, sy-vline,
  WA_RELULAIDEVPLAN-ZUSTANDSSTUFE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RELULAIDEVPLAN 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_RELULAIDEVPLAN 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_RELULAIDEVPLAN INTO WA_RELULAIDEVPLAN.


*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 CUNIT, internal->external for field EINHEIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RELULAIDEVPLAN-EINHEIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RELULAIDEVPLAN-EINHEIT.
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_RELULAIDEVPLAN_STR, 
MANDT TYPE STRING,
INTRENO TYPE STRING,
PARTID TYPE STRING,
KENNZEICHEN TYPE STRING,
LFDNR TYPE STRING,
NUTZUNGSART TYPE STRING,
UNTERNUTZUNGSART TYPE STRING,
FLAECHE TYPE STRING,
EINHEIT TYPE STRING,
BODENKLASSE TYPE STRING,
ZUSTANDSSTUFE TYPE STRING,
BODENART TYPE STRING,
EMZ TYPE STRING,
BETRIEBSNOTW TYPE STRING,
GUELTIG_VON TYPE STRING,
GUELTIG_BIS TYPE STRING,
NART_KAT TYPE STRING,
GRUPPE TYPE STRING,
REALISIERUNG_AB TYPE STRING,
XUSAGETYPE TYPE STRING,
XSUBUSAGETYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RELULAIDEVPLAN_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_RELULAIDEVPLAN_STR-MANDT sy-vline 
WA_RELULAIDEVPLAN_STR-INTRENO sy-vline 
WA_RELULAIDEVPLAN_STR-PARTID sy-vline 
WA_RELULAIDEVPLAN_STR-KENNZEICHEN sy-vline 
WA_RELULAIDEVPLAN_STR-LFDNR sy-vline 
WA_RELULAIDEVPLAN_STR-NUTZUNGSART sy-vline 
WA_RELULAIDEVPLAN_STR-UNTERNUTZUNGSART sy-vline 
WA_RELULAIDEVPLAN_STR-FLAECHE sy-vline 
WA_RELULAIDEVPLAN_STR-EINHEIT sy-vline 
WA_RELULAIDEVPLAN_STR-BODENKLASSE sy-vline 
WA_RELULAIDEVPLAN_STR-ZUSTANDSSTUFE sy-vline 
WA_RELULAIDEVPLAN_STR-BODENART sy-vline 
WA_RELULAIDEVPLAN_STR-EMZ sy-vline 
WA_RELULAIDEVPLAN_STR-BETRIEBSNOTW sy-vline 
WA_RELULAIDEVPLAN_STR-GUELTIG_VON sy-vline 
WA_RELULAIDEVPLAN_STR-GUELTIG_BIS sy-vline 
WA_RELULAIDEVPLAN_STR-NART_KAT sy-vline 
WA_RELULAIDEVPLAN_STR-GRUPPE sy-vline 
WA_RELULAIDEVPLAN_STR-REALISIERUNG_AB sy-vline 
WA_RELULAIDEVPLAN_STR-XUSAGETYPE sy-vline 
WA_RELULAIDEVPLAN_STR-XSUBUSAGETYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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