ABAP Select data from SAP table RELULB_DI_EXT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RELULB_DI_EXT
*  INTO TABLE @DATA(IT_RELULB_DI_EXT2).
*--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_RELULB_DI_EXT INDEX 1 INTO DATA(WA_RELULB_DI_EXT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RELULB_DI_EXT>-ORG_INDEX = 1.
<RELULB_DI_EXT>-AKTYP = 1.
<RELULB_DI_EXT>-RLTP1 = 1.
<RELULB_DI_EXT>-RLTP2 = 1.
<RELULB_DI_EXT>-RLTP3 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RELULB_DI_EXT-RLTP4, sy-vline,
  WA_RELULB_DI_EXT-RLTP5, sy-vline,
  WA_RELULB_DI_EXT-RLTP6, sy-vline,
  WA_RELULB_DI_EXT-RLTP7, sy-vline,
  WA_RELULB_DI_EXT-RLTP8, sy-vline,
  WA_RELULB_DI_EXT-RLTP9, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RELULB_DI_EXT 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_RELULB_DI_EXT 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_RELULB_DI_EXT INTO WA_RELULB_DI_EXT.


*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_RELULB_DI_EXT-PARTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RELULB_DI_EXT-PARTNR.
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_RELULB_DI_EXT_STR, 
ORG_INDEX TYPE STRING,
AKTYP TYPE STRING,
RLTP1 TYPE STRING,
RLTP2 TYPE STRING,
RLTP3 TYPE STRING,
RLTP4 TYPE STRING,
RLTP5 TYPE STRING,
RLTP6 TYPE STRING,
RLTP7 TYPE STRING,
RLTP8 TYPE STRING,
RLTP9 TYPE STRING,
COUNTRY TYPE STRING,
STATE TYPE STRING,
DISTRICT TYPE STRING,
MUNICIPAL TYPE STRING,
LBCNO TYPE STRING,
PROCNO TYPE STRING,
USATYPEPLUM TYPE STRING,
DESCRLB TYPE STRING,
DPLACEDUPROC TYPE STRING,
DLEGALBIND TYPE STRING,
DBLOCKCHANGE TYPE STRING,
DSTATEMENT TYPE STRING,
DLASTMODADD TYPE STRING,
DREVOCATION TYPE STRING,
BERGRP TYPE STRING,
CHINDAP TYPE STRING,
INTRENOPA TYPE STRING,
AREALB TYPE STRING,
FEINS TYPE STRING,
CHINDBP TYPE STRING,
PARTNR TYPE STRING,
ROLETYP TYPE STRING,
ROLE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RELULB_DI_EXT_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_RELULB_DI_EXT_STR-ORG_INDEX sy-vline 
WA_RELULB_DI_EXT_STR-AKTYP sy-vline 
WA_RELULB_DI_EXT_STR-RLTP1 sy-vline 
WA_RELULB_DI_EXT_STR-RLTP2 sy-vline 
WA_RELULB_DI_EXT_STR-RLTP3 sy-vline 
WA_RELULB_DI_EXT_STR-RLTP4 sy-vline 
WA_RELULB_DI_EXT_STR-RLTP5 sy-vline 
WA_RELULB_DI_EXT_STR-RLTP6 sy-vline 
WA_RELULB_DI_EXT_STR-RLTP7 sy-vline 
WA_RELULB_DI_EXT_STR-RLTP8 sy-vline 
WA_RELULB_DI_EXT_STR-RLTP9 sy-vline 
WA_RELULB_DI_EXT_STR-COUNTRY sy-vline 
WA_RELULB_DI_EXT_STR-STATE sy-vline 
WA_RELULB_DI_EXT_STR-DISTRICT sy-vline 
WA_RELULB_DI_EXT_STR-MUNICIPAL sy-vline 
WA_RELULB_DI_EXT_STR-LBCNO sy-vline 
WA_RELULB_DI_EXT_STR-PROCNO sy-vline 
WA_RELULB_DI_EXT_STR-USATYPEPLUM sy-vline 
WA_RELULB_DI_EXT_STR-DESCRLB sy-vline 
WA_RELULB_DI_EXT_STR-DPLACEDUPROC sy-vline 
WA_RELULB_DI_EXT_STR-DLEGALBIND sy-vline 
WA_RELULB_DI_EXT_STR-DBLOCKCHANGE sy-vline 
WA_RELULB_DI_EXT_STR-DSTATEMENT sy-vline 
WA_RELULB_DI_EXT_STR-DLASTMODADD sy-vline 
WA_RELULB_DI_EXT_STR-DREVOCATION sy-vline 
WA_RELULB_DI_EXT_STR-BERGRP sy-vline 
WA_RELULB_DI_EXT_STR-CHINDAP sy-vline 
WA_RELULB_DI_EXT_STR-INTRENOPA sy-vline 
WA_RELULB_DI_EXT_STR-AREALB sy-vline 
WA_RELULB_DI_EXT_STR-FEINS sy-vline 
WA_RELULB_DI_EXT_STR-CHINDBP sy-vline 
WA_RELULB_DI_EXT_STR-PARTNR sy-vline 
WA_RELULB_DI_EXT_STR-ROLETYP sy-vline 
WA_RELULB_DI_EXT_STR-ROLE sy-vline      INTO ld_text SEPARATED BY SPACE.

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