ABAP Select data from SAP table RELUBI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RELUBI
*  INTO TABLE @DATA(IT_RELUBI2).
*--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_RELUBI INDEX 1 INTO DATA(WA_RELUBI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RELUBI>-BIRELEASE = 1.
<RELUBI>-BIVALIDFROM = 1.
<RELUBI>-BIVALIDTO = 1.
<RELUBI>-BIREPRTO = 1.
<RELUBI>-BIREPRTOTIME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RELUBI-BIRECAT, sy-vline,
  WA_RELUBI-PUBLICTYPE, sy-vline,
  WA_RELUBI-FILENO, sy-vline,
  WA_RELUBI-BIPURPOSE, sy-vline,
  WA_RELUBI-BIPRICING, sy-vline,
  WA_RELUBI-BIEXISTLRDEP2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RELUBI 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_RELUBI 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_RELUBI INTO WA_RELUBI.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_RELUBI_STR, 
BIRELEASE TYPE STRING,
BIVALIDFROM TYPE STRING,
BIVALIDTO TYPE STRING,
BIREPRTO TYPE STRING,
BIREPRTOTIME TYPE STRING,
BIRECAT TYPE STRING,
PUBLICTYPE TYPE STRING,
FILENO TYPE STRING,
BIPURPOSE TYPE STRING,
BIPRICING TYPE STRING,
BIEXISTLRDEP2 TYPE STRING,
BIEXISTLRDEP3 TYPE STRING,
BIEXISTEASEMENT TYPE STRING,
BIEXISTCONTAM TYPE STRING,
BIEXISTNOTCLEAN TYPE STRING,
BIEXISTPROTSITE TYPE STRING,
BIEXISTLBCODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RELUBI_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_RELUBI_STR-BIRELEASE sy-vline 
WA_RELUBI_STR-BIVALIDFROM sy-vline 
WA_RELUBI_STR-BIVALIDTO sy-vline 
WA_RELUBI_STR-BIREPRTO sy-vline 
WA_RELUBI_STR-BIREPRTOTIME sy-vline 
WA_RELUBI_STR-BIRECAT sy-vline 
WA_RELUBI_STR-PUBLICTYPE sy-vline 
WA_RELUBI_STR-FILENO sy-vline 
WA_RELUBI_STR-BIPURPOSE sy-vline 
WA_RELUBI_STR-BIPRICING sy-vline 
WA_RELUBI_STR-BIEXISTLRDEP2 sy-vline 
WA_RELUBI_STR-BIEXISTLRDEP3 sy-vline 
WA_RELUBI_STR-BIEXISTEASEMENT sy-vline 
WA_RELUBI_STR-BIEXISTCONTAM sy-vline 
WA_RELUBI_STR-BIEXISTNOTCLEAN sy-vline 
WA_RELUBI_STR-BIEXISTPROTSITE sy-vline 
WA_RELUBI_STR-BIEXISTLBCODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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