ABAP Select data from SAP table RELUROCTODO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RELUROCTODO
*  INTO TABLE @DATA(IT_RELUROCTODO2).
*--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_RELUROCTODO INDEX 1 INTO DATA(WA_RELUROCTODO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RELUROCTODO>-ENQFLAG = 1.
<RELUROCTODO>-PROCIND = 1.
<RELUROCTODO>-PROCRESETIND = 1.
<RELUROCTODO>-DELFLAG = 1.
<RELUROCTODO>-DELIND = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RELUROCTODO-GISIND, sy-vline,
  WA_RELUROCTODO-INTRENOROC, sy-vline,
  WA_RELUROCTODO-INTRENOAO, sy-vline,
  WA_RELUROCTODO-INTRENOPA, sy-vline,
  WA_RELUROCTODO-FLAGSEPA, sy-vline,
  WA_RELUROCTODO-DOKART, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RELUROCTODO 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_RELUROCTODO 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_RELUROCTODO INTO WA_RELUROCTODO.


*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 KATPARTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RELUROCTODO-KATPARTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RELUROCTODO-KATPARTNR.
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_RELUROCTODO_STR, 
ENQFLAG TYPE STRING,
PROCIND TYPE STRING,
PROCRESETIND TYPE STRING,
DELFLAG TYPE STRING,
DELIND TYPE STRING,
GISIND TYPE STRING,
INTRENOROC TYPE STRING,
INTRENOAO TYPE STRING,
INTRENOPA TYPE STRING,
FLAGSEPA TYPE STRING,
DOKART TYPE STRING,
KATVN TYPE STRING,
KATPARTNR TYPE STRING,
VNACHWNR TYPE STRING,
ISSUED TYPE STRING,
DATUM_KAT TYPE STRING,
PAID TYPE STRING,
XOBART TYPE STRING,
XMOBJECT TYPE STRING,
OBJECTKEY TYPE STRING,
SEL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RELUROCTODO_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_RELUROCTODO_STR-ENQFLAG sy-vline 
WA_RELUROCTODO_STR-PROCIND sy-vline 
WA_RELUROCTODO_STR-PROCRESETIND sy-vline 
WA_RELUROCTODO_STR-DELFLAG sy-vline 
WA_RELUROCTODO_STR-DELIND sy-vline 
WA_RELUROCTODO_STR-GISIND sy-vline 
WA_RELUROCTODO_STR-INTRENOROC sy-vline 
WA_RELUROCTODO_STR-INTRENOAO sy-vline 
WA_RELUROCTODO_STR-INTRENOPA sy-vline 
WA_RELUROCTODO_STR-FLAGSEPA sy-vline 
WA_RELUROCTODO_STR-DOKART sy-vline 
WA_RELUROCTODO_STR-KATVN sy-vline 
WA_RELUROCTODO_STR-KATPARTNR sy-vline 
WA_RELUROCTODO_STR-VNACHWNR sy-vline 
WA_RELUROCTODO_STR-ISSUED sy-vline 
WA_RELUROCTODO_STR-DATUM_KAT sy-vline 
WA_RELUROCTODO_STR-PAID sy-vline 
WA_RELUROCTODO_STR-XOBART sy-vline 
WA_RELUROCTODO_STR-XMOBJECT sy-vline 
WA_RELUROCTODO_STR-OBJECTKEY sy-vline 
WA_RELUROCTODO_STR-SEL sy-vline      INTO ld_text SEPARATED BY SPACE.

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